High 7.5Published Aug 28, 2026

CVE-2026-80691scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE

Updated under an hour ago (Oct 27, 2026, 5:50 PM ET)

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Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	394f811848827ad23d2b43e94e5d72a24cfbc39f builds before 3c60a8b4037dc35e365658fcbcb349a5d742ff49; from 394f811848827ad23d2b43e94e5d72a24cfbc39f before a326b19cfb7775378b50acaa8d836ba44e29b4c2; from 394f811848827ad23d2b43e94e5d72a24cfbc39f before bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1; from 394f811848827ad23d2b43e94e5d72a24cfbc39f before f15bcf9a99b1b2683fcfa005b9b3680b5600581f; 394f811848827ad23d2b43e94e5d72a24cfbc39f builds before 9c33222bd387312874fbe36ca8002e5c945b9653	CNA record

References

References

https://git.kernel.org/stable/c/3c60a8b4037dc35e365658fcbcb349a5d742ff49
https://git.kernel.org/stable/c/a326b19cfb7775378b50acaa8d836ba44e29b4c2
https://git.kernel.org/stable/c/bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1
https://git.kernel.org/stable/c/f15bcf9a99b1b2683fcfa005b9b3680b5600581f
https://git.kernel.org/stable/c/9c33222bd387312874fbe36ca8002e5c945b9653

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.