High severity7.8NVD Advisory· Published Jul 29, 2026· Updated Aug 17, 2026
CVE-2026-64559
CVE-2026-64559
Description
In the Linux kernel, the following vulnerability has been resolved:
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl
Explicitly check the buffer length request structure provided by user-space and fail, if it exceeds the buffer size.
Affected products
4- osv-coords2 versions
>= 6.12.0, < 6.12.97+ 1 more
- (no CPE)range: >= 6.12.0, < 6.12.97
- (no CPE)range: < 7.1.7-1.1
Patches
Vulnerability mechanics
References
4News mentions
1- Linux Kernel: Three Vulnerabilities Including Use-After-Free Disclosed TogetherVypr Intelligence · Jul 30, 2026