CVE-2026-31628
Medium
Description
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedApr 24, 2026
First seenApr 24, 2026
How to fix
Update
- linux linux_kernel3.17, 4.5, 4.10, 5.10.253, 5.15.203, 6.1.169, 6.6.135, 6.12.82, 6.18.23, 6.19.13, 7.0.1 or later
Patches
- git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7
- git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb
- git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893
- git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f
- git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25
- git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10
- git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3
- git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3
- git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.16.58 ≤ v < 3.17, 4.4.144 ≤ v < 4.5, 4.9.102 ≤ v < 4.10, 4.14.1 ≤ v < 5.10.253, 5.11 ≤ v < 5.15.203, 5.16 ≤ v < 6.1.169, 6.2 ≤ v < 6.6.135, 6.7 ≤ v < 6.12.82, 6.13 ≤ v < 6.18.23, 6.19 ≤ v < 6.19.13, 7.0 ≤ v < 7.0.1, 4.14 | 3.17, 4.5, 4.10, 5.10.253, 5.15.203, 6.1.169, 6.6.135, 6.12.82, 6.18.23, 6.19.13, 7.0.1 |
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