CVE-2026-31628

MEDIUM

x86/CPU: Fix FPDSS on Zen1

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 5.5
EPSS 0.0002
EPSS Percentile 5.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (36)
Linux/Linux < 4.14
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 0548529af20e68c6552817834b766646dd3bd7a7
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 1272cfedf4cd1019ddf583917a99b62f2d3645bb
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 546785c719418c6166834a47e372a88f5f7ae893
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 91f02726b2203b71545713ecb7fb006e60a2d66f
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - ad17f07e95e6e8505e2153e5b391f0d27eacce25
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - b731aca06387b195058a9f6449a03b62efa1bd10
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - e6af5286efe5a56128b34032572c9ce9ebeccda3
Linux/Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - ed7a3a246309ccc807238f1b4f159ee6d37ff9c4
Linux/Linux 3.16.58 - 3.17
... and 26 more
Published Apr 24, 2026
Tracked Since Apr 24, 2026