CVE-2026-80691 is a vulnerability in Linux Kernel
Published on August 28, 2026
scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE
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.
Products Associated with CVE-2026-80691
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Affected Versions
Linux:- Version 394f811848827ad23d2b43e94e5d72a24cfbc39f and below 3c60a8b4037dc35e365658fcbcb349a5d742ff49 is affected.
- Version 394f811848827ad23d2b43e94e5d72a24cfbc39f and below a326b19cfb7775378b50acaa8d836ba44e29b4c2 is affected.
- Version 394f811848827ad23d2b43e94e5d72a24cfbc39f and below bdd8a1297ef101bb5ac57e53b4fbe5e364afd8b1 is affected.
- Version 394f811848827ad23d2b43e94e5d72a24cfbc39f and below f15bcf9a99b1b2683fcfa005b9b3680b5600581f is affected.
- Version 394f811848827ad23d2b43e94e5d72a24cfbc39f and below 9c33222bd387312874fbe36ca8002e5c945b9653 is affected.
- Version 6.5 is affected.
- Before 6.5 is unaffected.
- Version 6.6.151, <= 6.6.* is unaffected.
- Version 6.12.103, <= 6.12.* is unaffected.
- Version 6.18.44, <= 6.18.* is unaffected.
- Version 7.1.8, <= 7.1.* is unaffected.
- Version 7.2, <= * is unaffected.