{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54056", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T12:21:05.091Z", "datePublished": "2025-12-24T12:23:04.559Z", "dateUpdated": "2025-12-24T12:23:04.559Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-24T12:23:04.559Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkheaders: Use array declaration instead of char\n\nUnder CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination\nand source buffers. Defining kernel_headers_data as \"char\" would trip\nthis check. Since these addresses are treated as byte arrays, define\nthem as arrays (as done everywhere else).\n\nThis was seen with:\n\n $ cat /sys/kernel/kheaders.tar.xz >> /dev/null\n\n detected buffer overflow in memcpy\n kernel BUG at lib/string_helpers.c:1027!\n ...\n RIP: 0010:fortify_panic+0xf/0x20\n [...]\n Call Trace:\n <TASK>\n ikheaders_read+0x45/0x50 [kheaders]\n kernfs_fop_read_iter+0x1a4/0x2f0\n ..."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/kheaders.c"], "versions": [{"version": "43d8ce9d65a54846d378545770991e65838981e0", "lessThan": "719459877d58c8aced5845c1e5b98d8d87d09197", "status": "affected", "versionType": "git"}, {"version": "43d8ce9d65a54846d378545770991e65838981e0", "lessThan": "fcd2da2e6bf2640a31a2a5b118b50dc3635c707b", "status": "affected", "versionType": "git"}, {"version": "43d8ce9d65a54846d378545770991e65838981e0", "lessThan": "4a07d2d511e2703efd4387891d49e0326f1157f3", "status": "affected", "versionType": "git"}, {"version": "43d8ce9d65a54846d378545770991e65838981e0", "lessThan": "b9f6845a492de20679b84bda6b08be347c5819da", "status": "affected", "versionType": "git"}, {"version": "43d8ce9d65a54846d378545770991e65838981e0", "lessThan": "d6d1af6b8611801b585c53c0cc63626c8d339e96", "status": "affected", "versionType": "git"}, {"version": "43d8ce9d65a54846d378545770991e65838981e0", "lessThan": "82d2e01b95c439fe55fab5e04fc83387c42d3a48", "status": "affected", "versionType": "git"}, {"version": "43d8ce9d65a54846d378545770991e65838981e0", "lessThan": "b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/kheaders.c"], "versions": [{"version": "5.2", "status": "affected"}, {"version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.243", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.180", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.111", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.28", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.15", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3.2", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.4.243"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.10.180"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.15.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.1.28"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.2.15"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.3.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197"}, {"url": "https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b"}, {"url": "https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3"}, {"url": "https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da"}, {"url": "https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96"}, {"url": "https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48"}, {"url": "https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb"}], "title": "kheaders: Use array declaration instead of char", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkheaders: Use array declaration instead of char\n\nUnder CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination\nand source buffers. Defining kernel_headers_data as \"char\" would trip\nthis check. Since these addresses are treated as byte arrays, define\nthem as arrays (as done everywhere else).\n\nThis was seen with:\n\n $ cat /sys/kernel/kheaders.tar.xz >> /dev/null\n\n detected buffer overflow in memcpy\n kernel BUG at lib/string_helpers.c:1027!\n ...\n RIP: 0010:fortify_panic+0xf/0x20\n [...]\n Call Trace:\n <TASK>\n ikheaders_read+0x45/0x50 [kheaders]\n kernfs_fop_read_iter+0x1a4/0x2f0\n ..."}], "id": "CVE-2023-54056", "lastModified": "2025-12-24T13:16:07.320", "metrics": {}, "published": "2025-12-24T13:16:07.320", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}