Bug 2508488 (CVE-2026-64559) - CVE-2026-64559 kernel: s390/pkey: Check length in PKEY_VERIFYPROTK ioctl
Summary: CVE-2026-64559 kernel: s390/pkey: Check length in PKEY_VERIFYPROTK ioctl
Keywords:
Status: NEW
Alias: CVE-2026-64559
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-29 17:02 UTC by OSIDB Bzimport
Modified: 2026-07-30 02:58 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-07-29 17:02:07 UTC 
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.
Comment 1 TEJ RATHI 2026-07-30 02:48:09 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072914-CVE-2026-64559-839b@gregkh/T
Note You need to log in before you can comment on or make changes to this bug.