{
    "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": "2026-05-11T19:54:38.759Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:54:38.759Z"
            },
            "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"
                                }
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                    ]
                }
            ],
            "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",
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}