CVE-2026-80679

s390/dasd: Fix potential NULL pointer dereference

State: Published
Severity: Not scored
Published: Aug 28, 2026
Updated: Aug 28, 2026
Reserved: Aug 26, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	91dc4a197569230683ca8bad551e655a4bf14c30 to before dbf2ae34d2f1390a9fc1abf3dce7f809e022caaeAffected 91dc4a197569230683ca8bad551e655a4bf14c30 to before 3000367a512b1283ca52230bf21f8c91dfbec45bAffected 91dc4a197569230683ca8bad551e655a4bf14c30 to before cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4cAffected 91dc4a197569230683ca8bad551e655a4bf14c30 to before e156c70c505c6c9adce3b7be5a82025f00544709Affected 91dc4a197569230683ca8bad551e655a4bf14c30 to before 3453a993a3f14c1684560ecf26585046976f6ac6Affected 91dc4a197569230683ca8bad551e655a4bf14c30 to before 86cdfd061509bcde84f3145f7221ba64e3e53b1fAffected 91dc4a197569230683ca8bad551e655a4bf14c30 to before 96b8e09b09539f252a5eeea6baebd93c2e3779bdAffected 91dc4a197569230683ca8bad551e655a4bf14c30 to before 9973026f572db6b67570cadc30942f3014e41079Affected
LinuxLinux	5.3Affected before 5.3Not affected 5.10.265 through 5.10.Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.151 through 6.6.Not affected 6.12.103 through 6.12.Not affected 6.18.44 through 6.18.Not affected 7.1.8 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

91dc4a197569230683ca8bad551e655a4bf14c30 to before dbf2ae34d2f1390a9fc1abf3dce7f809e022caaeAffected
91dc4a197569230683ca8bad551e655a4bf14c30 to before 3000367a512b1283ca52230bf21f8c91dfbec45bAffected
91dc4a197569230683ca8bad551e655a4bf14c30 to before cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4cAffected
91dc4a197569230683ca8bad551e655a4bf14c30 to before e156c70c505c6c9adce3b7be5a82025f00544709Affected
91dc4a197569230683ca8bad551e655a4bf14c30 to before 3453a993a3f14c1684560ecf26585046976f6ac6Affected
91dc4a197569230683ca8bad551e655a4bf14c30 to before 86cdfd061509bcde84f3145f7221ba64e3e53b1fAffected
91dc4a197569230683ca8bad551e655a4bf14c30 to before 96b8e09b09539f252a5eeea6baebd93c2e3779bdAffected
91dc4a197569230683ca8bad551e655a4bf14c30 to before 9973026f572db6b67570cadc30942f3014e41079Affected

LinuxLinux

5.3Affected
before 5.3Not affected
5.10.265 through 5.10.*Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.151 through 6.6.*Not affected
6.12.103 through 6.12.*Not affected
6.18.44 through 6.18.*Not affected
7.1.8 through 7.1.*Not affected
7.2 and laterNot affected

References

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