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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < ed7a3a246309ccc807238f1b4f159ee6d37ff9c4
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 0548529af20e68c6552817834b766646dd3bd7a7
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 1272cfedf4cd1019ddf583917a99b62f2d3645bb
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 91f02726b2203b71545713ecb7fb006e60a2d66f
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < b731aca06387b195058a9f6449a03b62efa1bd10
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < ad17f07e95e6e8505e2153e5b391f0d27eacce25
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < e6af5286efe5a56128b34032572c9ce9ebeccda3
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 546785c719418c6166834a47e372a88f5f7ae893
Linux Linux affected
Version Status Constraints
5.10.253 unaffected ≤ 5.10.*
5.15.203 unaffected ≤ 5.15.*
6.1.169 unaffected ≤ 6.1.*
6.6.135 unaffected ≤ 6.6.*
6.12.82 unaffected ≤ 6.12.*
6.18.23 unaffected ≤ 6.18.*
6.19.13 unaffected ≤ 6.19.*
7.0.1 unaffected ≤ 7.0.*

No data.

No data.

No data.

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Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7 cve-icon cve-icon
https://git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb cve-icon cve-icon
https://git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893 cve-icon cve-icon
https://git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f cve-icon cve-icon
https://git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25 cve-icon cve-icon
https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10 cve-icon cve-icon
https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3 cve-icon cve-icon
https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4 cve-icon cve-icon
History

Fri, 24 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title x86/CPU: Fix FPDSS on Zen1
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-04-24T14:42:49.181Z

Reserved: 2026-03-09T15:48:24.124Z

Link: CVE-2026-31628

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-24T15:16:42.103

Modified: 2026-04-24T15:16:42.103

Link: CVE-2026-31628

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.