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{"bugzilla": {"description": "cups: cups-filters: cups-filters: Out-of-bounds write in pdftoraster via crafted PDF", "id": "2414705", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414705"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-787", "details": ["cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. In cups-filters prior to 1.28.18, by crafting a PDF file with a large `MediaBox` value, an attacker can cause CUPS-Filter 1.x\u2019s `pdftoraster` tool to write beyond the bounds of an array. First, a PDF with a large `MediaBox` width value causes `header.cupsWidth` to become large. Next, the calculation of `bytesPerLine = (header.cupsBitsPerPixel * header.cupsWidth + 7) / 8` overflows, resulting in a small value. Then, `lineBuf` is allocated with the small `bytesPerLine` size. Finally, `convertLineChunked` calls `writePixel8`, which attempts to write to `lineBuf` outside of its buffer size (out of bounds write). In libcupsfilters, the maintainers found the same `bytesPerLine` multiplication without overflow check, but the provided test case does not cause an overflow there, because the values are different. Commit 50d94ca0f2fa6177613c97c59791bde568631865 contains a patch, which is incorporated into cups-filters version 1.28.18."], "name": "CVE-2025-64503", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "cups-filters", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "cups-filters", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "cups-filters", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "cups-filters", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-11-12T22:04:03Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-64503\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-64503\nhttp://www.openwall.com/lists/oss-security/2025/11/12/2\nhttps://github.com/OpenPrinting/cups-filters/blob/aea8d0db017e495b0204433ebdb0e86b4871094c/filter/pdftoraster.cxx#L1620\nhttps://github.com/OpenPrinting/cups-filters/blob/aea8d0db017e495b0204433ebdb0e86b4871094c/filter/pdftoraster.cxx#L1880\nhttps://github.com/OpenPrinting/cups-filters/commit/50d94ca0f2fa6177613c97c59791bde568631865\nhttps://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-893j-2wr2-wrh9\nhttps://github.com/OpenPrinting/libcupsfilters/blob/1dd86d835b27ed149b66aee1a4853d1db8a1f44c/cupsfilters/pdftoraster.cxx#L1790"], "threat_severity": "Moderate"}

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