scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE (CVE-2026-80691) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80691

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

Answer in brief

CVE-2026-80691 records a Unknown severity vulnerability in scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=394f811848827ad23d2b43e94e5d72a24cfbc39f <3c60a8b4037dc35e365658fcbcb349a5d742ff49 \|\| >=394f811848827ad23d2b43e94e5d72a24cfbc39f <a326b19cfb7775378b50acaa8d836ba44e29b4c2 \|\| >=394f811848827ad23d2b43e94e5d72a24cfbc39f <bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1 \|\| >=394f811848827ad23d2b43e94e5d72a24cfbc39f <f15bcf9a99b1b2683fcfa005b9b3680b5600581f \|\| >=394f811848827ad23d2b43e94e5d72a24cfbc39f <9c33222bd387312874fbe36ca8002e5c945b9653	3c60a8b4037dc35e365658fcbcb349a5d742ff49, a326b19cfb7775378b50acaa8d836ba44e29b4c2, bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1, f15bcf9a99b1b2683fcfa005b9b3680b5600581f, 9c33222bd387312874fbe36ca8002e5c945b9653
Linux/Linuxgeneric	6.5	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 3c60a8b4037dc35e365658fcbcb349a5d742ff49 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.