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CVE-2023-54056

11
FAUCET Score

CVE-2023-54056 is a buffer overflow vulnerability in the Linux kernel's kheaders module. It specifically affects systems configured with FORTIFY_SOURCE, where a memcpy operation incorrectly handles the size of the kernel_headers_data variable, leading to a detected buffer overflow. While no CVSS score is available, the FAUCET Risk Score is low at 7/100, suggesting a limited impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
LinuxLinux
5.2CNA affecteddefault affected
LinuxLinux
>= 43d8ce9d65a54846d378545770991e65838981e0, < 4a07d2d511e2703efd4387891d49e0326f1157f3, >= 43d8ce9d65a54846d378545770991e65838981e0, < 719459877d58c8aced5845c1e5b98d8d87d09197, >= 43d8ce9d65a54846d378545770991e65838981e0, < 82d2e01b95c439fe55fab5e04fc83387c42d3a48, >= 43d8ce9d65a54846d378545770991e65838981e0, < b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb, >= 43d8ce9d65a54846d378545770991e65838981e0, < b9f6845a492de20679b84bda6b08be347c5819da, >= 43d8ce9d65a54846d378545770991e65838981e0, < d6d1af6b8611801b585c53c0cc63626c8d339e96, >= 43d8ce9d65a54846d378545770991e65838981e0, < fcd2da2e6bf2640a31a2a5b118b50dc3635c707bCNA affecteddefault unaffected

CVSS Data

CVSS data has not been published for this CVE.

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15

Social Chatter

Media Mentions

No media coverage found for this CVE.

Remediation

Vendor Patches (4)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2023-54056Low

kernel: kheaders: Use array declaration instead of char

Dec 24, 2025

References

git.kernel.org / stable/c/4a07d2d511e2703efd4387891d49e0326f1157f3
git.kernel.org / stable/c/719459877d58c8aced5845c1e5b98d8d87d09197
git.kernel.org / stable/c/82d2e01b95c439fe55fab5e04fc83387c42d3a48
git.kernel.org / stable/c/b69edab47f1da8edd8e7bfdf8c70f51a2a5d89fb
git.kernel.org / stable/c/b9f6845a492de20679b84bda6b08be347c5819da
git.kernel.org / stable/c/d6d1af6b8611801b585c53c0cc63626c8d339e96
git.kernel.org / stable/c/fcd2da2e6bf2640a31a2a5b118b50dc3635c707b