CVE-2026-31628

EUVD-2026-25521
In the Linux kernel, the following vulnerability has been resolved:

x86/CPU: Fix FPDSS on Zen1

Zen1's hardware divider can leave, under certain circumstances, partial
results from previous operations.  Those results can be leaked by
another, attacker thread.

Fix that with a chicken bit.
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: 6%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
3.16.58 ≤
𝑥
< 3.17
linuxlinux_kernel
4.4.144 ≤
𝑥
< 4.5
linuxlinux_kernel
4.9.102 ≤
𝑥
< 4.10
linuxlinux_kernel
4.14.1 ≤
𝑥
< 5.10.253
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.203
linuxlinux_kernel
5.16 ≤
𝑥
< 6.1.169
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.135
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.82
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.23
linuxlinux_kernel
6.19 ≤
𝑥
< 6.19.13
linuxlinux_kernel
7.0 ≤
𝑥
< 7.0.1
linuxlinux_kernel
4.14
𝑥
= Vulnerable software versions
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
bpftool
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
bpftool-debuginfo
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
bpftool6.12
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
bpftool6.12-debuginfo
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
bpftool6.18
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
bpftool6.18-debuginfo
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-debuginfo
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-debuginfo-common-aarch64
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-debuginfo-common-x86_64
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-devel
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-headers
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-livepatch-6.1.170-210.320
Amazon Linux 2023
1:1.0-0.amzn2023
fixed
kernel-livepatch-6.12.83-113.160
Amazon Linux 2023
1:1.0-0.amzn2023
fixed
kernel-livepatch-6.18.25-55.108
Amazon Linux 2023
1:1.0-0.amzn2023
fixed
kernel-modules-extra
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-modules-extra-common
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-tools
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-tools-debuginfo
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel-tools-devel
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
kernel6.12
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-debuginfo
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-debuginfo-common-aarch64
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-debuginfo-common-x86_64
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-devel
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-headers
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-modules-extra
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-modules-extra-common
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-tools
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-tools-debuginfo
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.12-tools-devel
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
kernel6.18
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-debuginfo
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-debuginfo-common-aarch64
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-debuginfo-common-x86_64
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-devel
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-headers
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-modules-extra
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-modules-extra-common
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-tools
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-tools-debuginfo
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
kernel6.18-tools-devel
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
perf
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
perf-debuginfo
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
perf6.12
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
perf6.12-debuginfo
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
perf6.18
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
perf6.18-debuginfo
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
python3-perf
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
python3-perf-debuginfo
Amazon Linux 2023
1:6.1.170-210.320.amzn2023
fixed
python3-perf6.12
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
python3-perf6.12-debuginfo
Amazon Linux 2023
1:6.12.83-113.160.amzn2023
fixed
python3-perf6.18
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
python3-perf6.18-debuginfo
Amazon Linux 2023
1:6.18.25-55.108.amzn2023
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
kernel
Azure Linux 3.0
0:6.6.137.1-1.azl3
fixed
Vulnerability Media Exposure
References
https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7
https://git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb
https://git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893
https://git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f
https://git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25
https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10
https://git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3
https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3
https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4