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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.

PUBLISHED Reserved 2026-03-09 | Published 2026-04-24 | Updated 2026-04-27 | Assigner Linux

Product status

Default status
unaffected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before ed7a3a246309ccc807238f1b4f159ee6d37ff9c4
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before 0548529af20e68c6552817834b766646dd3bd7a7
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before 1272cfedf4cd1019ddf583917a99b62f2d3645bb
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before 91f02726b2203b71545713ecb7fb006e60a2d66f
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before b731aca06387b195058a9f6449a03b62efa1bd10
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before ad17f07e95e6e8505e2153e5b391f0d27eacce25
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before e6af5286efe5a56128b34032572c9ce9ebeccda3
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before 546785c719418c6166834a47e372a88f5f7ae893
affected

f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 (git) before e55d98e7756135f32150b9b8f75d580d0d4b2dd3
affected

5abd1583e06b3963e5c9d915760367de86808b78 (git)
affected

4ba461d426490b6ed7e8298c4d3b7a13aa5d2686 (git)
affected

5a63725cd18fcee2af6ec46ccb856b64ad3077b4 (git)
affected

Default status
affected

4.14
affected

Any version before 4.14
unaffected

5.10.253 (semver)
unaffected

5.15.203 (semver)
unaffected

6.1.169 (semver)
unaffected

6.6.135 (semver)
unaffected

6.12.82 (semver)
unaffected

6.18.23 (semver)
unaffected

6.19.13 (semver)
unaffected

7.0.1 (semver)
unaffected

7.1-rc1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4

git.kernel.org/...c/0548529af20e68c6552817834b766646dd3bd7a7

git.kernel.org/...c/1272cfedf4cd1019ddf583917a99b62f2d3645bb

git.kernel.org/...c/91f02726b2203b71545713ecb7fb006e60a2d66f

git.kernel.org/...c/b731aca06387b195058a9f6449a03b62efa1bd10

git.kernel.org/...c/ad17f07e95e6e8505e2153e5b391f0d27eacce25

git.kernel.org/...c/e6af5286efe5a56128b34032572c9ce9ebeccda3

git.kernel.org/...c/546785c719418c6166834a47e372a88f5f7ae893

git.kernel.org/...c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3

cve.org (CVE-2026-31628)

nvd.nist.gov (CVE-2026-31628)

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