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CVE-2026-99177

Last refreshed2026-10-31

Status: UPDATED  |  Advisory ID: CVE-2026-99177

Key Details

CVECVE-2026-99177
CVSS Score / Version
7.8 (High) / CVSS v3.1
Updated2026-10-31
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Prose
attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

In the Linux kernel, the following vulnerability has been resolved:

KVM: SEV: Fix page dirtying in sev_gmem_post_populate()

set_page_dirty() requires that the caller holds some kind of lock to

ensure that the page's mapping does not concurrently go away.

That is not the case for a random page we got from get_user_pages_fast(),

so use set_page_dirty_lock().

[sean: tag for stable] (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-99177
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-99177

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