CVE-2026-64559CWE-125

CVE-2026-64559

High · published July 29, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
1.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00120 · 1.7th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-07-29T21:16Z
References (4)
https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 29 JUL 16:31Z
    s390/pkey: Check length in PKEY_VERIFYPROTK ioctl
    cvelistv5