PT-2026-65849 · Linux · Linux

CVE-2026-64559 · Published 2026-07-29 · Updated 2026-07-29

NVD

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Related Identifiers

CVE-2026-64559

Affected Products

Linux

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-64559 · Security Note
• https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac · Note
• https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554 · Note
• https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970 · Note
• https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7 · Note