Unrated
x86/CPU: Fix FPDSS on Zen1
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.
Announced Group revision 1
Original source ↗CVE-2026-31628
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-31628
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "ed7a3a246309ccc807238f1b4f159ee6d37ff9c4",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "0548529af20e68c6552817834b766646dd3bd7a7",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "1272cfedf4cd1019ddf583917a99b62f2d3645bb",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "91f02726b2203b71545713ecb7fb006e60a2d66f",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "b731aca06387b195058a9f6449a03b62efa1bd10",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "ad17f07e95e6e8505e2153e5b391f0d27eacce25",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "e6af5286efe5a56128b34032572c9ce9ebeccda3",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "546785c719418c6166834a47e372a88f5f7ae893",
"versionType": "git"
},
{
"status": "affected",
"version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
"lessThan": "e55d98e7756135f32150b9b8f75d580d0d4b2dd3",
"versionType": "git"
},
{
"status": "affected",
"version": "5abd1583e06b3963e5c9d915760367de86808b78",
"versionType": "git"
},
{
"status": "affected",
"version": "4ba461d426490b6ed7e8298c4d3b7a13aa5d2686",
"versionType": "git"
},
{
"status": "affected",
"version": "5a63725cd18fcee2af6ec46ccb856b64ad3077b4",
"versionType": "git"
},
{
"status": "affected",
"version": "3.16.58",
"lessThan": "3.17",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.4.144",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.9.102",
"lessThan": "4.10",
"versionType": "semver"
}
],
"programFiles": [
"arch/x86/include/asm/msr-index.h",
"arch/x86/kernel/cpu/amd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.169",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.135",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.82",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.23",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.13",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0.1",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/x86/include/asm/msr-index.h",
"arch/x86/kernel/cpu/amd.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31628
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28303 · Revision 1
- Added to Heist Feed
- Publisher date