CVE-2026-43406

In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds reads in process_message_header() If the message frame is (maliciously) corrupted in a way that the length of the control segment ends up being less than the size of the message header or a different frame is made to look like a message frame, out-of-bounds reads may ensue in process_message_header(). Perform an explicit bounds check before decoding the message header.

CVSS 3.1

9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-05-08

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8
• https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb
• https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5
• https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2
• https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb

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