CVE-2026-43406

high

Description

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.

References

https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1

https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4

https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb

https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2

https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5

https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb

https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8

Details

Source: Mitre, NVD

Published: 2026-05-08

Updated: 2026-05-08

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High