CVE-2026-43141

EUVD-2026-27702
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.1 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
4.15 ≤
𝑥
< 5.10.252
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.202
linuxlinux_kernel
5.16 ≤
𝑥
< 6.1.165
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.128
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.75
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.16
linuxlinux_kernel
6.19 ≤
𝑥
< 6.19.6
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.170-3
fixed
bookworm (security)
6.1.174-1
fixed
bullseye
vulnerable
bullseye (security)
5.10.257-1
fixed
forky
7.0.12-2
fixed
sid
7.0.13-1
fixed
trixie
6.12.86-1
fixed
trixie (security)
6.12.94-1
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
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