CVE-2026-89988

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89988

Key Details

CVE	CVE-2026-89988
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:

kprobes: Protect kprobe_blacklist with RCU

__within_kprobe_blacklist() traverses kprobe_blacklist without holding

kprobe_mutex. When a module is unloaded, kprobe_remove_area_blacklist()

removes blacklist entries and immediately frees them with kfree().

A concurrent call to within_kprobe_blacklist() can therefore dereference

freed memory.

Furthermore, within_kprobe_blacklist() can be called in atomic or

non-preemptible contexts where the sleeping kprobe_mutex cannot be taken.

Protect kprobe_blacklist with RCU. Use guard(rcu)() and

list_for_each_entry_rcu() for traversal, list_add_tail_rcu() for

insertions, list_del_rcu() for deletions, and kfree_rcu() to reclaim

entries safely after a grace period. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89988
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89988

Source

Reference

NVD

CVE