CVE-2026-43141
Published: May 9, 2026Last modified: May 9, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut Number of MW LUTs depends on NTB configuration and can be set to zero, in such scenario rounddown_pow_of_two will cause undefined behaviour and should not be performed. This patch ensures that rounddown_pow_of_two is called on valid value.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.1 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/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 (6.12.76-r0) |
References
- https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08
- https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67
- https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082
- https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389
- https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec
- https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd
- https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764
- https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3