Unrated severityNVD Advisory· Published Aug 28, 2026
CVE-2026-80679
CVE-2026-80679
Description
In the Linux kernel, the following vulnerability has been resolved:
s390/dasd: Fix potential NULL pointer dereference
dasd_release_space() checks the implementation of the is_ese() discipline function before calling it to determine if a given device is an ESE DASD.
The current usage of the logical AND operator will lead to a NULL pointer dereference as the function is called even if the function pointer is NULL.
Fix this by using the logical OR operator.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/3000367a512b1283ca52230bf21f8c91dfbec45bnvd
- git.kernel.org/stable/c/3453a993a3f14c1684560ecf26585046976f6ac6nvd
- git.kernel.org/stable/c/86cdfd061509bcde84f3145f7221ba64e3e53b1fnvd
- git.kernel.org/stable/c/96b8e09b09539f252a5eeea6baebd93c2e3779bdnvd
- git.kernel.org/stable/c/9973026f572db6b67570cadc30942f3014e41079nvd
- git.kernel.org/stable/c/cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4cnvd
- git.kernel.org/stable/c/dbf2ae34d2f1390a9fc1abf3dce7f809e022caaenvd
- git.kernel.org/stable/c/e156c70c505c6c9adce3b7be5a82025f00544709nvd
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