CVE-2026-80691
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux
PublishedAug 28, 2026
First seenAug 28, 2026
How to fix
Update
- Linux Linux3c60a8b4037dc35e365658fcbcb349a5d742ff49, a326b19cfb7775378b50acaa8d836ba44e29b4c2, bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1, f15bcf9a99b1b2683fcfa005b9b3680b5600581f, 9c33222bd387312874fbe36ca8002e5c945b9653 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 394f811848827ad23d2b43e94e5d72a24cfbc39f ≤ v < 3c60a8b4037dc35e365658fcbcb349a5d742ff49, 394f811848827ad23d2b43e94e5d72a24cfbc39f ≤ v < a326b19cfb7775378b50acaa8d836ba44e29b4c2, 394f811848827ad23d2b43e94e5d72a24cfbc39f ≤ v < bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1, 394f811848827ad23d2b43e94e5d72a24cfbc39f ≤ v < f15bcf9a99b1b2683fcfa005b9b3680b5600581f, 394f811848827ad23d2b43e94e5d72a24cfbc39f ≤ v < 9c33222bd387312874fbe36ca8002e5c945b9653, 6.5 | 3c60a8b4037dc35e365658fcbcb349a5d742ff49, a326b19cfb7775378b50acaa8d836ba44e29b4c2, bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1, f15bcf9a99b1b2683fcfa005b9b3680b5600581f, 9c33222bd387312874fbe36ca8002e5c945b9653 |
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