CVE-2023-54056kheaders: Use array declaration instead of char
- —Not scoredno CVSS score yet
- 0.23%Exploitation in 30 daysEPSS · top 87% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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 ...
Timeline
ID reserved
By Linux
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.23% · top 87% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 43d8ce9d65a54846d378545770991e65838981e0 – < 719459877d58c8aced5845c1e5b98d8d87d09197
- affected 43d8ce9d65a54846d378545770991e65838981e0 – < fcd2da2e6bf2640a31a2a5b118b50dc3635c707b
- affected 43d8ce9d65a54846d378545770991e65838981e0 – < 4a07d2d511e2703efd4387891d49e0326f1157f3
- affected 43d8ce9d65a54846d378545770991e65838981e0 – < b9f6845a492de20679b84bda6b08be347c5819da
- affected 43d8ce9d65a54846d378545770991e65838981e0 – < d6d1af6b8611801b585c53c0cc63626c8d339e96
- affected 43d8ce9d65a54846d378545770991e65838981e0 – < 82d2e01b95c439fe55fab5e04fc83387c42d3a48
- affected 43d8ce9d65a54846d378545770991e65838981e0 – < b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb
- affected 5.2
- unaffected < 5.2
- unaffected 5.4.243 – ≤ 5.4.*
- unaffected 5.10.180 – ≤ 5.10.*
- unaffected 5.15.111 – ≤ 5.15.*
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References
References7
- https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197 (opens in a new tab)
- https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b (opens in a new tab)
- https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3 (opens in a new tab)
- https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da (opens in a new tab)
- https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96 (opens in a new tab)
- https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48 (opens in a new tab)
- https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-60270 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-54056)Record last updated .