CVE-2026-80679 is a vulnerability in Linux Kernel
Published on August 28, 2026
s390/dasd: Fix potential NULL pointer dereference
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.
Products Associated with CVE-2026-80679
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Affected Versions
Linux:- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below dbf2ae34d2f1390a9fc1abf3dce7f809e022caae is affected.
- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below 3000367a512b1283ca52230bf21f8c91dfbec45b is affected.
- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c is affected.
- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below e156c70c505c6c9adce3b7be5a82025f00544709 is affected.
- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below 3453a993a3f14c1684560ecf26585046976f6ac6 is affected.
- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below 86cdfd061509bcde84f3145f7221ba64e3e53b1f is affected.
- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below 96b8e09b09539f252a5eeea6baebd93c2e3779bd is affected.
- Version 91dc4a197569230683ca8bad551e655a4bf14c30 and below 9973026f572db6b67570cadc30942f3014e41079 is affected.
- Version 5.3 is affected.
- Before 5.3 is unaffected.
- Version 5.10.265, <= 5.10.* is unaffected.
- Version 5.15.216, <= 5.15.* is unaffected.
- Version 6.1.183, <= 6.1.* 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.