CVE-2026-43406
Published: May 9, 2026Last modified: May 9, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.1 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.80-r0) |
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
- https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4
- https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1