CVE-2023-54056In 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…
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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 ...
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
References
- https://git.kernel.org/stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3
- https://git.kernel.org/stable/c/719459877d58c8aced5845c1e5b98d8d87d09197
- https://git.kernel.org/stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48
- https://git.kernel.org/stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb
- https://git.kernel.org/stable/c/b9f6845a492de20679b84bda6b08be347c5819da
- https://git.kernel.org/stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96
- https://git.kernel.org/stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b
The CVE record on cve.org NVD's entry
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