CVE-2026-80691

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

HIGH
7.5
CVSS Score
Published: August 28, 2026 at 06:52 AM UTC
Updated: October 16, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

394f811848827ad23d2b43e94e5d72a24cfbc39f6.5
Vendor states this is fixed in 3c60a8b4037dc35e365658fcbcb349a5d742ff49 (fixed)
Vendor states this is fixed in 9c33222bd387312874fbe36ca8002e5c945b9653 (fixed)
Vendor states this is fixed in a326b19cfb7775378b50acaa8d836ba44e29b4c2 (fixed)
Vendor states this is fixed in bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1 (fixed)
Vendor states this is fixed in f15bcf9a99b1b2683fcfa005b9b3680b5600581f (fixed)
Vendor states this is fixed in 6.12.103 (unaffected)
Vendor states this is fixed in 6.18.44 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)
Vendor states this is fixed in 6.6.151 (unaffected)
Vendor states this is fixed in 7.1.8 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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