🔐 CVE Alert

CVE-2023-54056

UNKNOWN 0.0

kheaders: Use array declaration instead of char

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

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 ...

Vendor linux
Product linux
Ecosystems
Industries
Technology
Published Dec 24, 2025
Last Updated May 11, 2026
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Affected Versions

Linux / Linux
43d8ce9d65a54846d378545770991e65838981e0 < 719459877d58c8aced5845c1e5b98d8d87d09197 43d8ce9d65a54846d378545770991e65838981e0 < fcd2da2e6bf2640a31a2a5b118b50dc3635c707b 43d8ce9d65a54846d378545770991e65838981e0 < 4a07d2d511e2703efd4387891d49e0326f1157f3 43d8ce9d65a54846d378545770991e65838981e0 < b9f6845a492de20679b84bda6b08be347c5819da 43d8ce9d65a54846d378545770991e65838981e0 < d6d1af6b8611801b585c53c0cc63626c8d339e96 43d8ce9d65a54846d378545770991e65838981e0 < 82d2e01b95c439fe55fab5e04fc83387c42d3a48 43d8ce9d65a54846d378545770991e65838981e0 < b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb
Linux / Linux
5.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197 git.kernel.org: https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b git.kernel.org: https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3 git.kernel.org: https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da git.kernel.org: https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96 git.kernel.org: https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48 git.kernel.org: https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb