CVE-2026-80691

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-80691

Key Details

CVE	CVE-2026-80691
CVSS Score / Version	7.5 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is none; 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:

scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE

In the iblock_execute_pr_out() function, PRO_PREEMPT,

PRO_PREEMPT_AND_ABORT, and PRO_RELEASE all perform callback capability

checks through ops->pr_clear. The error check allows unimplemented hooks

to pass through the gate, resulting dereferencing a NULL function

pointer.

Check whether the hooks that need to be called are supported. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-80691
CVE	https://www.cve.org/CVERecord?id=CVE-2026-80691

Source

Reference

NVD

CVE