FKIE_CVE-2023-54056

Vulnerability from fkie_nvd - Published: 2025-12-24 13:16 - Updated: 2026-06-17 06:46
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: kheaders: Use array declaration instead of char Under CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination and source buffers. Defining kernel_headers_data as "char" would trip this check. Since these addresses are treated as byte arrays, define them as arrays (as done everywhere else). This was seen with: $ cat /sys/kernel/kheaders.tar.xz >> /dev/null detected buffer overflow in memcpy kernel BUG at lib/string_helpers.c:1027! ... RIP: 0010:fortify_panic+0xf/0x20 [...] Call Trace: <TASK> ikheaders_read+0x45/0x50 [kheaders] kernfs_fop_read_iter+0x1a4/0x2f0 ...
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/kheaders.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "719459877d58c8aced5845c1e5b98d8d87d09197",
              "status": "affected",
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "versionType": "git"
            },
            {
              "lessThan": "fcd2da2e6bf2640a31a2a5b118b50dc3635c707b",
              "status": "affected",
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "versionType": "git"
            },
            {
              "lessThan": "4a07d2d511e2703efd4387891d49e0326f1157f3",
              "status": "affected",
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "versionType": "git"
            },
            {
              "lessThan": "b9f6845a492de20679b84bda6b08be347c5819da",
              "status": "affected",
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "versionType": "git"
            },
            {
              "lessThan": "d6d1af6b8611801b585c53c0cc63626c8d339e96",
              "status": "affected",
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "versionType": "git"
            },
            {
              "lessThan": "82d2e01b95c439fe55fab5e04fc83387c42d3a48",
              "status": "affected",
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "versionType": "git"
            },
            {
              "lessThan": "b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb",
              "status": "affected",
              "version": "43d8ce9d65a54846d378545770991e65838981e0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/kheaders.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.243",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.180",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.28",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.15",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "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 \u003e\u003e /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   \u003cTASK\u003e\n   ikheaders_read+0x45/0x50 [kheaders]\n   kernfs_fop_read_iter+0x1a4/0x2f0\n  ..."
    }
  ],
  "id": "CVE-2023-54056",
  "lastModified": "2026-06-17T06:46:43.437",
  "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": "Deferred"
}


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