CVE-2026-31628

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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

Published

2026-04-24

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

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

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