CVE-2026-23005 — Linux vulnerability
7 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 98.82%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 25
Description
In the Linux kernel, the following vulnerability has been resolved:
x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1
When loading guest XSAVE state via KVM_SET_XSAVE, and when updating XFD in
response to a guest WRMSR, clear XFD-disabled features in the saved (or to
be restored) XSTATE_BV to ensure KVM doesn't attempt to load state for
features that are disabled via the guest's XFD. Because the kernel
executes XRSTOR with the guest's XFD, saving XSTATE_BV[i]=1 with XFD[i]=1
w…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages6 packages
▶CVEListV5linux/linux820a6ee944e74e57255ac2e90916ecdaade57b95 — b5995c01ba53d84182ecb9492fc4d91cfe8a362d+5
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-326g-5c6q-7782: In the Linux kernel, the following vulnerability has been resolved:
x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1
When loading↗2026-01-25
OSV▶
CVE-2026-23005: In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1 When loading gu↗2026-01-25