CVE-2026-89922

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89922

Key Details

CVE	CVE-2026-89922
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-19
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

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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

KVM: s390: Take srcu when importing watchpoint data

__import_wp_info() backs up the original guest memory contents of a

watchpoint with read_guest_abs(), which is kvm_read_guest() and therefore

resolves the memslot via __kvm_memslots(). That requires kvm->srcu (or

kvm->slots_lock) to be held, otherwise a concurrent memslot update can

free the memslots array under us once its SRCU grace period has elapsed.

As this is not fast path, following lock ordering (mutex first, then

srcu) take the big hammer and hold the srcu for the full import. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89922
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89922

Source

Reference

NVD

CVE