CVE-2026-31483

EUVD-2026-24846
In the Linux kernel, the following vulnerability has been resolved:

s390/syscalls: Add spectre boundary for syscall dispatch table

The s390 syscall number is directly controlled by userspace, but does
not have an array_index_nospec() boundary to prevent access past the
syscall function pointer tables.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 3%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
5.12.1 ≤
𝑥
< 5.15.203
linuxlinux_kernel
5.16 ≤
𝑥
< 6.1.168
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.131
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.80
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.21
linuxlinux_kernel
6.19 ≤
𝑥
< 6.19.11
linuxlinux_kernel
5.12
linuxlinux_kernel
7.0:rc1
linuxlinux_kernel
7.0:rc2
linuxlinux_kernel
7.0:rc3
linuxlinux_kernel
7.0:rc4
linuxlinux_kernel
7.0:rc5
linuxlinux_kernel
7.0:rc6
linuxlinux_kernel
7.0:rc7
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
5.10.223-1
fixed
bullseye (security)
5.10.257-1
fixed
forky
7.0.10-1
fixed
sid
7.0.10-1
fixed
trixie
6.12.86-1
fixed
trixie (security)
6.12.90-2
fixed
linux-6.1
bullseye (security)
6.1.174-1~deb11u1
fixed
Vulnerability Media Exposure
References
https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310
https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333
https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbd
https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256
https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0
https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3
https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4