github - ghsa-w8p6-7x4v-892g

GHSA-W8P6-7X4V-892G

Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2025-12-24 15:30

Details

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: ikheaders_read+0x45/0x50 [kheaders] kernfs_fop_read_iter+0x1a4/0x2f0 ...

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2023-54056"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:16:07Z",
    "severity": null
  },
  "details": "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": "GHSA-w8p6-7x4v-892g",
  "modified": "2025-12-24T15:30:36Z",
  "published": "2025-12-24T15:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54056"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2023-54056 (GCVE-0-2023-54056)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:23 – Updated: 2025-12-24 12:23

Title

kheaders: Use array declaration instead of char

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 ...

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/719459877d58c8ace…
	https://git.kernel.org/stable/c/fcd2da2e6bf2640a3…
	https://git.kernel.org/stable/c/4a07d2d511e2703ef…
	https://git.kernel.org/stable/c/b9f6845a492de2067…
	https://git.kernel.org/stable/c/d6d1af6b8611801b5…
	https://git.kernel.org/stable/c/82d2e01b95c439fe5…
	https://git.kernel.org/stable/c/b69edab47f1da8edd…

Impacted products

Vendor

Product

Version

Linux

Affected: 43d8ce9d65a54846d378545770991e65838981e0 , < 719459877d58c8aced5845c1e5b98d8d87d09197 (git)
Affected: 43d8ce9d65a54846d378545770991e65838981e0 , < fcd2da2e6bf2640a31a2a5b118b50dc3635c707b (git)
Affected: 43d8ce9d65a54846d378545770991e65838981e0 , < 4a07d2d511e2703efd4387891d49e0326f1157f3 (git)
Affected: 43d8ce9d65a54846d378545770991e65838981e0 , < b9f6845a492de20679b84bda6b08be347c5819da (git)
Affected: 43d8ce9d65a54846d378545770991e65838981e0 , < d6d1af6b8611801b585c53c0cc63626c8d339e96 (git)
Affected: 43d8ce9d65a54846d378545770991e65838981e0 , < 82d2e01b95c439fe55fab5e04fc83387c42d3a48 (git)
Affected: 43d8ce9d65a54846d378545770991e65838981e0 , < b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb (git)

Linux

Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.243 , ≤ 5.4.* (semver)
Unaffected: 5.10.180 , ≤ 5.10.* (semver)
Unaffected: 5.15.111 , ≤ 5.15.* (semver)
Unaffected: 6.1.28 , ≤ 6.1.* (semver)
Unaffected: 6.2.15 , ≤ 6.2.* (semver)
Unaffected: 6.3.2 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.243",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.180",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.111",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.28",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.15",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3.2",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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  ..."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T12:23:04.559Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54056",
    "datePublished": "2025-12-24T12:23:04.559Z",
    "dateReserved": "2025-12-24T12:21:05.091Z",
    "dateUpdated": "2025-12-24T12:23:04.559Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-W8P6-7X4V-892G

CVE-2023-54056 (GCVE-0-2023-54056)

Tags

Sightings

Nomenclature