Vulnerability 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.
References
- https://git.kernel.org/stable/c/3000367a512b1283ca52230bf21f8c91dfbec45b
- https://git.kernel.org/stable/c/3453a993a3f14c1684560ecf26585046976f6ac6
- https://git.kernel.org/stable/c/86cdfd061509bcde84f3145f7221ba64e3e53b1f
- https://git.kernel.org/stable/c/96b8e09b09539f252a5eeea6baebd93c2e3779bd
- https://git.kernel.org/stable/c/9973026f572db6b67570cadc30942f3014e41079
- https://git.kernel.org/stable/c/cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c
- https://git.kernel.org/stable/c/dbf2ae34d2f1390a9fc1abf3dce7f809e022caae
- https://git.kernel.org/stable/c/e156c70c505c6c9adce3b7be5a82025f00544709
FAQ
What is CVE-2026-80679?
CVE-2026-80679 is a documented vulnerability. 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 functi...
How severe is CVE-2026-80679?
CVSS scoring is not yet available for CVE-2026-80679. Check NVD for updates.
Is there a patch for CVE-2026-80679?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.