| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
mlx5: fix skb leak while fifo resync and push
During ptp resync operation SKBs were poped from the fifo but were never
freed neither by napi_consume nor by dev_kfree_skb_any. Add call to
napi_consume_skb to properly free SKBs.
Another leak was happening because mlx5e_skb_fifo_has_room() had an error
in the check. Comparing free running counters works well unless C promotes
the types to something wider than the counter. In this case counters are
u16 but the result of the substraction is promouted to int and it causes
wrong result (negative value) of the check when producer have already
overlapped but consumer haven't yet. Explicit cast to u16 fixes the issue. |
| In the Linux kernel, the following vulnerability has been resolved:
iommufd: Check for uptr overflow
syzkaller found that setting up a map with a user VA that wraps past zero
can trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0
due to invalid arguments.
Prevent creating a pages with a uptr and size that would math overflow.
WARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390
Modules linked in:
CPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:pfn_reader_user_pin+0x2e6/0x390
Code: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff <0f> 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00
RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72
RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002
RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e
R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60
R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000
FS: 00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0
PKRU: 55555554
Call Trace:
<TASK>
pfn_reader_next+0x14a/0x7b0
? interval_tree_double_span_iter_update+0x11a/0x140
pfn_reader_first+0x140/0x1b0
iopt_pages_rw_slow+0x71/0x280
? __this_cpu_preempt_check+0x20/0x30
iopt_pages_rw_access+0x2b2/0x5b0
iommufd_access_rw+0x19f/0x2f0
iommufd_test+0xd11/0x16f0
? write_comp_data+0x2f/0x90
iommufd_fops_ioctl+0x206/0x330
__x64_sys_ioctl+0x10e/0x160
? __pfx_iommufd_fops_ioctl+0x10/0x10
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc |
| In the Linux kernel, the following vulnerability has been resolved:
net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX.
syzkaller found zero division error [0] in div_s64_rem() called from
get_cycle_time_elapsed(), where sched->cycle_time is the divisor.
We have tests in parse_taprio_schedule() so that cycle_time will never
be 0, and actually cycle_time is not 0 in get_cycle_time_elapsed().
The problem is that the types of divisor are different; cycle_time is
s64, but the argument of div_s64_rem() is s32.
syzkaller fed this input and 0x100000000 is cast to s32 to be 0.
@TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME={0xc, 0x8, 0x100000000}
We use s64 for cycle_time to cast it to ktime_t, so let's keep it and
set max for cycle_time.
While at it, we prevent overflow in setup_txtime() and add another
test in parse_taprio_schedule() to check if cycle_time overflows.
Also, we add a new tdc test case for this issue.
[0]:
divide error: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 PID: 103 Comm: kworker/1:3 Not tainted 6.5.0-rc1-00330-g60cc1f7d0605 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:div_s64_rem include/linux/math64.h:42 [inline]
RIP: 0010:get_cycle_time_elapsed net/sched/sch_taprio.c:223 [inline]
RIP: 0010:find_entry_to_transmit+0x252/0x7e0 net/sched/sch_taprio.c:344
Code: 3c 02 00 0f 85 5e 05 00 00 48 8b 4c 24 08 4d 8b bd 40 01 00 00 48 8b 7c 24 48 48 89 c8 4c 29 f8 48 63 f7 48 99 48 89 74 24 70 <48> f7 fe 48 29 d1 48 8d 04 0f 49 89 cc 48 89 44 24 20 49 8d 85 10
RSP: 0018:ffffc90000acf260 EFLAGS: 00010206
RAX: 177450e0347560cf RBX: 0000000000000000 RCX: 177450e0347560cf
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000100000000
RBP: 0000000000000056 R08: 0000000000000000 R09: ffffed10020a0934
R10: ffff8880105049a7 R11: ffff88806cf3a520 R12: ffff888010504800
R13: ffff88800c00d800 R14: ffff8880105049a0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0edf84f0e8 CR3: 000000000d73c002 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
<TASK>
get_packet_txtime net/sched/sch_taprio.c:508 [inline]
taprio_enqueue_one+0x900/0xff0 net/sched/sch_taprio.c:577
taprio_enqueue+0x378/0xae0 net/sched/sch_taprio.c:658
dev_qdisc_enqueue+0x46/0x170 net/core/dev.c:3732
__dev_xmit_skb net/core/dev.c:3821 [inline]
__dev_queue_xmit+0x1b2f/0x3000 net/core/dev.c:4169
dev_queue_xmit include/linux/netdevice.h:3088 [inline]
neigh_resolve_output net/core/neighbour.c:1552 [inline]
neigh_resolve_output+0x4a7/0x780 net/core/neighbour.c:1532
neigh_output include/net/neighbour.h:544 [inline]
ip6_finish_output2+0x924/0x17d0 net/ipv6/ip6_output.c:135
__ip6_finish_output+0x620/0xaa0 net/ipv6/ip6_output.c:196
ip6_finish_output net/ipv6/ip6_output.c:207 [inline]
NF_HOOK_COND include/linux/netfilter.h:292 [inline]
ip6_output+0x206/0x410 net/ipv6/ip6_output.c:228
dst_output include/net/dst.h:458 [inline]
NF_HOOK.constprop.0+0xea/0x260 include/linux/netfilter.h:303
ndisc_send_skb+0x872/0xe80 net/ipv6/ndisc.c:508
ndisc_send_ns+0xb5/0x130 net/ipv6/ndisc.c:666
addrconf_dad_work+0xc14/0x13f0 net/ipv6/addrconf.c:4175
process_one_work+0x92c/0x13a0 kernel/workqueue.c:2597
worker_thread+0x60f/0x1240 kernel/workqueue.c:2748
kthread+0x2fe/0x3f0 kernel/kthread.c:389
ret_from_fork+0x2c/0x50 arch/x86/entry/entry_64.S:308
</TASK>
Modules linked in: |
| In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all()
rule_locs is allocated in ethtool_get_rxnfc and the size is determined by
rule_cnt from user space. So rule_cnt needs to be check before using
rule_locs to avoid NULL pointer dereference. |
| In the Linux kernel, the following vulnerability has been resolved:
MIPS: KVM: Fix NULL pointer dereference
After commit 45c7e8af4a5e3f0bea4ac209 ("MIPS: Remove KVM_TE support") we
get a NULL pointer dereference when creating a KVM guest:
[ 146.243409] Starting KVM with MIPS VZ extensions
[ 149.849151] CPU 3 Unable to handle kernel paging request at virtual address 0000000000000300, epc == ffffffffc06356ec, ra == ffffffffc063568c
[ 149.849177] Oops[#1]:
[ 149.849182] CPU: 3 PID: 2265 Comm: qemu-system-mip Not tainted 6.4.0-rc3+ #1671
[ 149.849188] Hardware name: THTF CX TL630 Series/THTF-LS3A4000-7A1000-ML4A, BIOS KL4.1F.TF.D.166.201225.R 12/25/2020
[ 149.849192] $ 0 : 0000000000000000 000000007400cce0 0000000000400004 ffffffff8119c740
[ 149.849209] $ 4 : 000000007400cce1 000000007400cce1 0000000000000000 0000000000000000
[ 149.849221] $ 8 : 000000240058bb36 ffffffff81421ac0 0000000000000000 0000000000400dc0
[ 149.849233] $12 : 9800000102a07cc8 ffffffff80e40e38 0000000000000001 0000000000400dc0
[ 149.849245] $16 : 0000000000000000 9800000106cd0000 9800000106cd0000 9800000100cce000
[ 149.849257] $20 : ffffffffc0632b28 ffffffffc05b31b0 9800000100ccca00 0000000000400000
[ 149.849269] $24 : 9800000106cd09ce ffffffff802f69d0
[ 149.849281] $28 : 9800000102a04000 9800000102a07cd0 98000001106a8000 ffffffffc063568c
[ 149.849293] Hi : 00000335b2111e66
[ 149.849295] Lo : 6668d90061ae0ae9
[ 149.849298] epc : ffffffffc06356ec kvm_vz_vcpu_setup+0xc4/0x328 [kvm]
[ 149.849324] ra : ffffffffc063568c kvm_vz_vcpu_setup+0x64/0x328 [kvm]
[ 149.849336] Status: 7400cce3 KX SX UX KERNEL EXL IE
[ 149.849351] Cause : 1000000c (ExcCode 03)
[ 149.849354] BadVA : 0000000000000300
[ 149.849357] PrId : 0014c004 (ICT Loongson-3)
[ 149.849360] Modules linked in: kvm nfnetlink_queue nfnetlink_log nfnetlink fuse sha256_generic libsha256 cfg80211 rfkill binfmt_misc vfat fat snd_hda_codec_hdmi input_leds led_class snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_pcm snd_timer snd serio_raw xhci_pci radeon drm_suballoc_helper drm_display_helper xhci_hcd ip_tables x_tables
[ 149.849432] Process qemu-system-mip (pid: 2265, threadinfo=00000000ae2982d2, task=0000000038e09ad4, tls=000000ffeba16030)
[ 149.849439] Stack : 9800000000000003 9800000100ccca00 9800000100ccc000 ffffffffc062cef4
[ 149.849453] 9800000102a07d18 c89b63a7ab338e00 0000000000000000 ffffffff811a0000
[ 149.849465] 0000000000000000 9800000106cd0000 ffffffff80e59938 98000001106a8920
[ 149.849476] ffffffff80e57f30 ffffffffc062854c ffffffff811a0000 9800000102bf4240
[ 149.849488] ffffffffc05b0000 ffffffff80e3a798 000000ff78000000 000000ff78000010
[ 149.849500] 0000000000000255 98000001021f7de0 98000001023f0078 ffffffff81434000
[ 149.849511] 0000000000000000 0000000000000000 9800000102ae0000 980000025e92ae28
[ 149.849523] 0000000000000000 c89b63a7ab338e00 0000000000000001 ffffffff8119dce0
[ 149.849535] 000000ff78000010 ffffffff804f3d3c 9800000102a07eb0 0000000000000255
[ 149.849546] 0000000000000000 ffffffff8049460c 000000ff78000010 0000000000000255
[ 149.849558] ...
[ 149.849565] Call Trace:
[ 149.849567] [<ffffffffc06356ec>] kvm_vz_vcpu_setup+0xc4/0x328 [kvm]
[ 149.849586] [<ffffffffc062cef4>] kvm_arch_vcpu_create+0x184/0x228 [kvm]
[ 149.849605] [<ffffffffc062854c>] kvm_vm_ioctl+0x64c/0xf28 [kvm]
[ 149.849623] [<ffffffff805209c0>] sys_ioctl+0xc8/0x118
[ 149.849631] [<ffffffff80219eb0>] syscall_common+0x34/0x58
The root cause is the deletion of kvm_mips_commpage_init() leaves vcpu
->arch.cop0 NULL. So fix it by making cop0 from a pointer to an embedded
object. |
| In the Linux kernel, the following vulnerability has been resolved:
netfilter: ebtables: fix table blob use-after-free
We are not allowed to return an error at this point.
Looking at the code it looks like ret is always 0 at this
point, but its not.
t = find_table_lock(net, repl->name, &ret, &ebt_mutex);
... this can return a valid table, with ret != 0.
This bug causes update of table->private with the new
blob, but then frees the blob right away in the caller.
Syzbot report:
BUG: KASAN: vmalloc-out-of-bounds in __ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168
Read of size 4 at addr ffffc90005425000 by task kworker/u4:4/74
Workqueue: netns cleanup_net
Call Trace:
kasan_report+0xbf/0x1f0 mm/kasan/report.c:517
__ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168
ebt_unregister_table+0x35/0x40 net/bridge/netfilter/ebtables.c:1372
ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169
cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:613
...
ip(6)tables appears to be ok (ret should be 0 at this point) but make
this more obvious. |
| In the Linux kernel, the following vulnerability has been resolved:
platform/x86: think-lmi: Fix memory leaks when parsing ThinkStation WMI strings
My previous commit introduced a memory leak where the item allocated
from tlmi_setting was not freed.
This commit also renames it to avoid confusion with the similarly name
variable in the same function. |
| In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Add check for kmemdup
Since the kmemdup may return NULL pointer,
it should be better to add check for the return value
in order to avoid NULL pointer dereference. |
| In the Linux kernel, the following vulnerability has been resolved:
bus: mhi: ep: Only send -ENOTCONN status if client driver is available
For the STOP and RESET commands, only send the channel disconnect status
-ENOTCONN if client driver is available. Otherwise, it will result in
null pointer dereference. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/ttm: Don't leak a resource on eviction error
On eviction errors other than -EMULTIHOP we were leaking a resource.
Fix.
v2:
- Avoid yet another goto (Andi Shyti) |
| In the Linux kernel, the following vulnerability has been resolved:
sh: dma: Fix DMA channel offset calculation
Various SoCs of the SH3, SH4 and SH4A family, which use this driver,
feature a differing number of DMA channels, which can be distributed
between up to two DMAC modules. The existing implementation fails to
correctly accommodate for all those variations, resulting in wrong
channel offset calculations and leading to kernel panics.
Rewrite dma_base_addr() in order to properly calculate channel offsets
in a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that
the correct DMAC module base is selected for the DMAOR register. |
| In the Linux kernel, the following vulnerability has been resolved:
net: macb: fix a memory corruption in extended buffer descriptor mode
For quite some time we were chasing a bug which looked like a sudden
permanent failure of networking and mmc on some of our devices.
The bug was very sensitive to any software changes and even more to
any kernel debug options.
Finally we got a setup where the problem was reproducible with
CONFIG_DMA_API_DEBUG=y and it revealed the issue with the rx dma:
[ 16.992082] ------------[ cut here ]------------
[ 16.996779] DMA-API: macb ff0b0000.ethernet: device driver tries to free DMA memory it has not allocated [device address=0x0000000875e3e244] [size=1536 bytes]
[ 17.011049] WARNING: CPU: 0 PID: 85 at kernel/dma/debug.c:1011 check_unmap+0x6a0/0x900
[ 17.018977] Modules linked in: xxxxx
[ 17.038823] CPU: 0 PID: 85 Comm: irq/55-8000f000 Not tainted 5.4.0 #28
[ 17.045345] Hardware name: xxxxx
[ 17.049528] pstate: 60000005 (nZCv daif -PAN -UAO)
[ 17.054322] pc : check_unmap+0x6a0/0x900
[ 17.058243] lr : check_unmap+0x6a0/0x900
[ 17.062163] sp : ffffffc010003c40
[ 17.065470] x29: ffffffc010003c40 x28: 000000004000c03c
[ 17.070783] x27: ffffffc010da7048 x26: ffffff8878e38800
[ 17.076095] x25: ffffff8879d22810 x24: ffffffc010003cc8
[ 17.081407] x23: 0000000000000000 x22: ffffffc010a08750
[ 17.086719] x21: ffffff8878e3c7c0 x20: ffffffc010acb000
[ 17.092032] x19: 0000000875e3e244 x18: 0000000000000010
[ 17.097343] x17: 0000000000000000 x16: 0000000000000000
[ 17.102647] x15: ffffff8879e4a988 x14: 0720072007200720
[ 17.107959] x13: 0720072007200720 x12: 0720072007200720
[ 17.113261] x11: 0720072007200720 x10: 0720072007200720
[ 17.118565] x9 : 0720072007200720 x8 : 000000000000022d
[ 17.123869] x7 : 0000000000000015 x6 : 0000000000000098
[ 17.129173] x5 : 0000000000000000 x4 : 0000000000000000
[ 17.134475] x3 : 00000000ffffffff x2 : ffffffc010a1d370
[ 17.139778] x1 : b420c9d75d27bb00 x0 : 0000000000000000
[ 17.145082] Call trace:
[ 17.147524] check_unmap+0x6a0/0x900
[ 17.151091] debug_dma_unmap_page+0x88/0x90
[ 17.155266] gem_rx+0x114/0x2f0
[ 17.158396] macb_poll+0x58/0x100
[ 17.161705] net_rx_action+0x118/0x400
[ 17.165445] __do_softirq+0x138/0x36c
[ 17.169100] irq_exit+0x98/0xc0
[ 17.172234] __handle_domain_irq+0x64/0xc0
[ 17.176320] gic_handle_irq+0x5c/0xc0
[ 17.179974] el1_irq+0xb8/0x140
[ 17.183109] xiic_process+0x5c/0xe30
[ 17.186677] irq_thread_fn+0x28/0x90
[ 17.190244] irq_thread+0x208/0x2a0
[ 17.193724] kthread+0x130/0x140
[ 17.196945] ret_from_fork+0x10/0x20
[ 17.200510] ---[ end trace 7240980785f81d6f ]---
[ 237.021490] ------------[ cut here ]------------
[ 237.026129] DMA-API: exceeded 7 overlapping mappings of cacheline 0x0000000021d79e7b
[ 237.033886] WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:499 add_dma_entry+0x214/0x240
[ 237.041802] Modules linked in: xxxxx
[ 237.061637] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.4.0 #28
[ 237.068941] Hardware name: xxxxx
[ 237.073116] pstate: 80000085 (Nzcv daIf -PAN -UAO)
[ 237.077900] pc : add_dma_entry+0x214/0x240
[ 237.081986] lr : add_dma_entry+0x214/0x240
[ 237.086072] sp : ffffffc010003c30
[ 237.089379] x29: ffffffc010003c30 x28: ffffff8878a0be00
[ 237.094683] x27: 0000000000000180 x26: ffffff8878e387c0
[ 237.099987] x25: 0000000000000002 x24: 0000000000000000
[ 237.105290] x23: 000000000000003b x22: ffffffc010a0fa00
[ 237.110594] x21: 0000000021d79e7b x20: ffffffc010abe600
[ 237.115897] x19: 00000000ffffffef x18: 0000000000000010
[ 237.121201] x17: 0000000000000000 x16: 0000000000000000
[ 237.126504] x15: ffffffc010a0fdc8 x14: 0720072007200720
[ 237.131807] x13: 0720072007200720 x12: 0720072007200720
[ 237.137111] x11: 0720072007200720 x10: 0720072007200720
[ 237.142415] x9 : 0720072007200720 x8 : 0000000000000259
[ 237.147718] x7 : 0000000000000001 x6 : 0000000000000000
[ 237.15302
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
cifs: fix potential oops in cifs_oplock_break
With deferred close we can have closes that race with lease breaks,
and so with the current checks for whether to send the lease response,
oplock_response(), this can mean that an unmount (kill_sb) can occur
just before we were checking if the tcon->ses is valid. See below:
[Fri Aug 4 04:12:50 2023] RIP: 0010:cifs_oplock_break+0x1f7/0x5b0 [cifs]
[Fri Aug 4 04:12:50 2023] Code: 7d a8 48 8b 7d c0 c0 e9 02 48 89 45 b8 41 89 cf e8 3e f5 ff ff 4c 89 f7 41 83 e7 01 e8 82 b3 03 f2 49 8b 45 50 48 85 c0 74 5e <48> 83 78 60 00 74 57 45 84 ff 75 52 48 8b 43 98 48 83 eb 68 48 39
[Fri Aug 4 04:12:50 2023] RSP: 0018:ffffb30607ddbdf8 EFLAGS: 00010206
[Fri Aug 4 04:12:50 2023] RAX: 632d223d32612022 RBX: ffff97136944b1e0 RCX: 0000000080100009
[Fri Aug 4 04:12:50 2023] RDX: 0000000000000001 RSI: 0000000080100009 RDI: ffff97136944b188
[Fri Aug 4 04:12:50 2023] RBP: ffffb30607ddbe58 R08: 0000000000000001 R09: ffffffffc08e0900
[Fri Aug 4 04:12:50 2023] R10: 0000000000000001 R11: 000000000000000f R12: ffff97136944b138
[Fri Aug 4 04:12:50 2023] R13: ffff97149147c000 R14: ffff97136944b188 R15: 0000000000000000
[Fri Aug 4 04:12:50 2023] FS: 0000000000000000(0000) GS:ffff9714f7c00000(0000) knlGS:0000000000000000
[Fri Aug 4 04:12:50 2023] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[Fri Aug 4 04:12:50 2023] CR2: 00007fd8de9c7590 CR3: 000000011228e000 CR4: 0000000000350ef0
[Fri Aug 4 04:12:50 2023] Call Trace:
[Fri Aug 4 04:12:50 2023] <TASK>
[Fri Aug 4 04:12:50 2023] process_one_work+0x225/0x3d0
[Fri Aug 4 04:12:50 2023] worker_thread+0x4d/0x3e0
[Fri Aug 4 04:12:50 2023] ? process_one_work+0x3d0/0x3d0
[Fri Aug 4 04:12:50 2023] kthread+0x12a/0x150
[Fri Aug 4 04:12:50 2023] ? set_kthread_struct+0x50/0x50
[Fri Aug 4 04:12:50 2023] ret_from_fork+0x22/0x30
[Fri Aug 4 04:12:50 2023] </TASK>
To fix this change the ordering of the checks before sending the oplock_response
to first check if the openFileList is empty. |
| In the Linux kernel, the following vulnerability has been resolved:
cifs: Fix lost destroy smbd connection when MR allocate failed
If the MR allocate failed, the smb direct connection info is NULL,
then smbd_destroy() will directly return, then the connection info
will be leaked.
Let's set the smb direct connection info to the server before call
smbd_destroy(). |
| In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Don't clone flow post action attributes second time
The code already clones post action attributes in
mlx5e_clone_flow_attr_for_post_act(). Creating another copy in
mlx5e_tc_post_act_add() is a erroneous leftover from original
implementation. Instead, assign handle->attribute to post_attr provided by
the caller. Note that cloning the attribute second time is not just
wasteful but also causes issues like second copy not being properly updated
in neigh update code which leads to following use-after-free:
Feb 21 09:02:00 c-237-177-40-045 kernel: BUG: KASAN: use-after-free in mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_report+0xbb/0x1a0
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_stack+0x1e/0x40
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_set_track+0x21/0x30
Feb 21 09:02:00 c-237-177-40-045 kernel: __kasan_kmalloc+0x7a/0x90
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_stack+0x1e/0x40
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_set_track+0x21/0x30
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_free_info+0x2a/0x40
Feb 21 09:02:00 c-237-177-40-045 kernel: ____kasan_slab_free+0x11a/0x1b0
Feb 21 09:02:00 c-237-177-40-045 kernel: page dumped because: kasan: bad access detected
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0: mlx5_cmd_out_err:803:(pid 8833): SET_FLOW_TABLE_ENTRY(0x936) op_mod(0x0) failed, status bad resource state(0x9), syndrome (0xf2ff71), err(-22)
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0 enp8s0f0: Failed to add post action rule
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0: mlx5e_tc_encap_flows_add:190:(pid 8833): Failed to update flow post acts, -22
Feb 21 09:02:00 c-237-177-40-045 kernel: Call Trace:
Feb 21 09:02:00 c-237-177-40-045 kernel: <TASK>
Feb 21 09:02:00 c-237-177-40-045 kernel: dump_stack_lvl+0x57/0x7d
Feb 21 09:02:00 c-237-177-40-045 kernel: print_report+0x170/0x471
Feb 21 09:02:00 c-237-177-40-045 kernel: ? mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_report+0xbb/0x1a0
Feb 21 09:02:00 c-237-177-40-045 kernel: ? mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: ? __module_address.part.0+0x62/0x200
Feb 21 09:02:00 c-237-177-40-045 kernel: ? mlx5_cmd_stub_create_flow_table+0xd0/0xd0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: ? __raw_spin_lock_init+0x3b/0x110
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5_cmd_create_fte+0x80/0xb0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: add_rule_fg+0xe80/0x19c0 [mlx5_core]
--
Feb 21 09:02:00 c-237-177-40-045 kernel: Allocated by task 13476:
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_stack+0x1e/0x40
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_set_track+0x21/0x30
Feb 21 09:02:00 c-237-177-40-045 kernel: __kasan_kmalloc+0x7a/0x90
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5_packet_reformat_alloc+0x7b/0x230 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_tc_tun_create_header_ipv4+0x977/0xf10 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_attach_encap+0x15b4/0x1e10 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: post_process_attr+0x305/0xa30 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_tc_add_fdb_flow+0x4c0/0xcf0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: __mlx5e_add_fdb_flow+0x7cf/0xe90 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_configure_flower+0xcaa/0x4b90 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_rep_setup_tc_cls_flower+0x99/0x1b0 [mlx5_core]
Feb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_rep_setup_tc_cb+0x133/0x1e0 [mlx5_core]
--
Feb 21 09:02:00 c-237-177-40-045 kernel: Freed by task 8833:
Feb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_s
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
btrfs: release path before inode lookup during the ino lookup ioctl
During the ino lookup ioctl we can end up calling btrfs_iget() to get an
inode reference while we are holding on a root's btree. If btrfs_iget()
needs to lookup the inode from the root's btree, because it's not
currently loaded in memory, then it will need to lock another or the
same path in the same root btree. This may result in a deadlock and
trigger the following lockdep splat:
WARNING: possible circular locking dependency detected
6.5.0-rc7-syzkaller-00004-gf7757129e3de #0 Not tainted
------------------------------------------------------
syz-executor277/5012 is trying to acquire lock:
ffff88802df41710 (btrfs-tree-01){++++}-{3:3}, at: __btrfs_tree_read_lock+0x2f/0x220 fs/btrfs/locking.c:136
but task is already holding lock:
ffff88802df418e8 (btrfs-tree-00){++++}-{3:3}, at: __btrfs_tree_read_lock+0x2f/0x220 fs/btrfs/locking.c:136
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (btrfs-tree-00){++++}-{3:3}:
down_read_nested+0x49/0x2f0 kernel/locking/rwsem.c:1645
__btrfs_tree_read_lock+0x2f/0x220 fs/btrfs/locking.c:136
btrfs_search_slot+0x13a4/0x2f80 fs/btrfs/ctree.c:2302
btrfs_init_root_free_objectid+0x148/0x320 fs/btrfs/disk-io.c:4955
btrfs_init_fs_root fs/btrfs/disk-io.c:1128 [inline]
btrfs_get_root_ref+0x5ae/0xae0 fs/btrfs/disk-io.c:1338
btrfs_get_fs_root fs/btrfs/disk-io.c:1390 [inline]
open_ctree+0x29c8/0x3030 fs/btrfs/disk-io.c:3494
btrfs_fill_super+0x1c7/0x2f0 fs/btrfs/super.c:1154
btrfs_mount_root+0x7e0/0x910 fs/btrfs/super.c:1519
legacy_get_tree+0xef/0x190 fs/fs_context.c:611
vfs_get_tree+0x8c/0x270 fs/super.c:1519
fc_mount fs/namespace.c:1112 [inline]
vfs_kern_mount+0xbc/0x150 fs/namespace.c:1142
btrfs_mount+0x39f/0xb50 fs/btrfs/super.c:1579
legacy_get_tree+0xef/0x190 fs/fs_context.c:611
vfs_get_tree+0x8c/0x270 fs/super.c:1519
do_new_mount+0x28f/0xae0 fs/namespace.c:3335
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (btrfs-tree-01){++++}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3142 [inline]
check_prevs_add kernel/locking/lockdep.c:3261 [inline]
validate_chain kernel/locking/lockdep.c:3876 [inline]
__lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5144
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
down_read_nested+0x49/0x2f0 kernel/locking/rwsem.c:1645
__btrfs_tree_read_lock+0x2f/0x220 fs/btrfs/locking.c:136
btrfs_tree_read_lock fs/btrfs/locking.c:142 [inline]
btrfs_read_lock_root_node+0x292/0x3c0 fs/btrfs/locking.c:281
btrfs_search_slot_get_root fs/btrfs/ctree.c:1832 [inline]
btrfs_search_slot+0x4ff/0x2f80 fs/btrfs/ctree.c:2154
btrfs_lookup_inode+0xdc/0x480 fs/btrfs/inode-item.c:412
btrfs_read_locked_inode fs/btrfs/inode.c:3892 [inline]
btrfs_iget_path+0x2d9/0x1520 fs/btrfs/inode.c:5716
btrfs_search_path_in_tree_user fs/btrfs/ioctl.c:1961 [inline]
btrfs_ioctl_ino_lookup_user+0x77a/0xf50 fs/btrfs/ioctl.c:2105
btrfs_ioctl+0xb0b/0xd40 fs/btrfs/ioctl.c:4683
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
ipv6: Fix an uninit variable access bug in __ip6_make_skb()
Syzbot reported a bug as following:
=====================================================
BUG: KMSAN: uninit-value in arch_atomic64_inc arch/x86/include/asm/atomic64_64.h:88 [inline]
BUG: KMSAN: uninit-value in arch_atomic_long_inc include/linux/atomic/atomic-long.h:161 [inline]
BUG: KMSAN: uninit-value in atomic_long_inc include/linux/atomic/atomic-instrumented.h:1429 [inline]
BUG: KMSAN: uninit-value in __ip6_make_skb+0x2f37/0x30f0 net/ipv6/ip6_output.c:1956
arch_atomic64_inc arch/x86/include/asm/atomic64_64.h:88 [inline]
arch_atomic_long_inc include/linux/atomic/atomic-long.h:161 [inline]
atomic_long_inc include/linux/atomic/atomic-instrumented.h:1429 [inline]
__ip6_make_skb+0x2f37/0x30f0 net/ipv6/ip6_output.c:1956
ip6_finish_skb include/net/ipv6.h:1122 [inline]
ip6_push_pending_frames+0x10e/0x550 net/ipv6/ip6_output.c:1987
rawv6_push_pending_frames+0xb12/0xb90 net/ipv6/raw.c:579
rawv6_sendmsg+0x297e/0x2e60 net/ipv6/raw.c:922
inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:827
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
____sys_sendmsg+0xa8e/0xe70 net/socket.c:2476
___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2530
__sys_sendmsg net/socket.c:2559 [inline]
__do_sys_sendmsg net/socket.c:2568 [inline]
__se_sys_sendmsg net/socket.c:2566 [inline]
__x64_sys_sendmsg+0x367/0x540 net/socket.c:2566
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Uninit was created at:
slab_post_alloc_hook mm/slab.h:766 [inline]
slab_alloc_node mm/slub.c:3452 [inline]
__kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491
__do_kmalloc_node mm/slab_common.c:967 [inline]
__kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988
kmalloc_reserve net/core/skbuff.c:492 [inline]
__alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565
alloc_skb include/linux/skbuff.h:1270 [inline]
__ip6_append_data+0x51c1/0x6bb0 net/ipv6/ip6_output.c:1684
ip6_append_data+0x411/0x580 net/ipv6/ip6_output.c:1854
rawv6_sendmsg+0x2882/0x2e60 net/ipv6/raw.c:915
inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:827
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
____sys_sendmsg+0xa8e/0xe70 net/socket.c:2476
___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2530
__sys_sendmsg net/socket.c:2559 [inline]
__do_sys_sendmsg net/socket.c:2568 [inline]
__se_sys_sendmsg net/socket.c:2566 [inline]
__x64_sys_sendmsg+0x367/0x540 net/socket.c:2566
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
It is because icmp6hdr does not in skb linear region under the scenario
of SOCK_RAW socket. Access icmp6_hdr(skb)->icmp6_type directly will
trigger the uninit variable access bug.
Use a local variable icmp6_type to carry the correct value in different
scenarios. |
| In the Linux kernel, the following vulnerability has been resolved:
media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer()
'read' is freed when it is known to be NULL, but not when a read error
occurs.
Revert the logic to avoid a small leak, should a m920x_read() call fail. |
| In the Linux kernel, the following vulnerability has been resolved:
powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT
lppaca_shared_proc() takes a pointer to the lppaca which is typically
accessed through get_lppaca(). With DEBUG_PREEMPT enabled, this leads
to checking if preemption is enabled, for example:
BUG: using smp_processor_id() in preemptible [00000000] code: grep/10693
caller is lparcfg_data+0x408/0x19a0
CPU: 4 PID: 10693 Comm: grep Not tainted 6.5.0-rc3 #2
Call Trace:
dump_stack_lvl+0x154/0x200 (unreliable)
check_preemption_disabled+0x214/0x220
lparcfg_data+0x408/0x19a0
...
This isn't actually a problem however, as it does not matter which
lppaca is accessed, the shared proc state will be the same.
vcpudispatch_stats_procfs_init() already works around this by disabling
preemption, but the lparcfg code does not, erroring any time
/proc/powerpc/lparcfg is accessed with DEBUG_PREEMPT enabled.
Instead of disabling preemption on the caller side, rework
lppaca_shared_proc() to not take a pointer and instead directly access
the lppaca, bypassing any potential preemption checks.
[mpe: Rework to avoid needing a definition in paca.h and lppaca.h] |
| In the Linux kernel, the following vulnerability has been resolved:
debugobjects: Don't wake up kswapd from fill_pool()
syzbot is reporting a lockdep warning in fill_pool() because the allocation
from debugobjects is using GFP_ATOMIC, which is (__GFP_HIGH | __GFP_KSWAPD_RECLAIM)
and therefore tries to wake up kswapd, which acquires kswapd_wait::lock.
Since fill_pool() might be called with arbitrary locks held, fill_pool()
should not assume that acquiring kswapd_wait::lock is safe.
Use __GFP_HIGH instead and remove __GFP_NORETRY as it is pointless for
!__GFP_DIRECT_RECLAIM allocation. |
