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.
Affected products
linux: linux kernel
References10
- git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7 Patch
- git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb Patch
- git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893 Patch
- git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f Patch
- git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25 Patch
- git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10 Patch
- git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3 Patch
- git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3 Patch
- git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4 Patch
- cert-portal.siemens.com/productcert/html/ssa-019113.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 13 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.