CVE-2026-64559

EUVD-2026-50406
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
---
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.176-1
fixed
bookworm (security)
6.1.177-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.259-1
fixed
forky
vulnerable
sid
7.1.5-1
fixed
trixie
vulnerable
trixie (security)
vulnerable
References
https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7
https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac
https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554
https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970