Riskcovery

CVE-2026-31628

x86/CPU: Fix FPDSS on Zen1

State
Published
Severity
Not scored
Published
Apr 24, 2026
Updated
Oct 15, 2026
Reserved
Mar 9, 2026

Read the record on cve.org

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

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before ed7a3a246309ccc807238f1b4f159ee6d37ff9c4Affected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before 0548529af20e68c6552817834b766646dd3bd7a7Affected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before 1272cfedf4cd1019ddf583917a99b62f2d3645bbAffected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before 91f02726b2203b71545713ecb7fb006e60a2d66fAffected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before b731aca06387b195058a9f6449a03b62efa1bd10Affected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before ad17f07e95e6e8505e2153e5b391f0d27eacce25Affected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before e6af5286efe5a56128b34032572c9ce9ebeccda3Affected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before 546785c719418c6166834a47e372a88f5f7ae893Affected
  • f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to before e55d98e7756135f32150b9b8f75d580d0d4b2dd3Affected
  • 5abd1583e06b3963e5c9d915760367de86808b78Affected
  • 4ba461d426490b6ed7e8298c4d3b7a13aa5d2686Affected
  • 5a63725cd18fcee2af6ec46ccb856b64ad3077b4Affected
  • 3.16.58 to before 3.17Affected
  • 4.4.144 to before 4.5Affected
  • 4.9.102 to before 4.10Affected
LinuxLinux
  • 4.14Affected
  • before 4.14Not affected
  • 5.10.253 through 5.10.*Not affected
  • 5.15.203 through 5.15.*Not affected
  • 6.1.169 through 6.1.*Not affected
  • 6.6.135 through 6.6.*Not affected
  • 6.12.82 through 6.12.*Not affected
  • 6.18.23 through 6.18.*Not affected
  • 6.19.13 through 6.19.*Not affected
  • 7.0.1 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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