Out-of-bounds Write Affecting kernel-uek package, versions <0:5.15.0-311.185.9.el8uek


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.25% (48th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELUEK-11778630
  • published12 Aug 2025
  • disclosed19 Dec 2023

Introduced: 19 Dec 2023

CVE-2023-6931  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-uek to version 0:5.15.0-311.185.9.el8uek or higher.
This issue was patched in ELSA-2025-20520.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation.

A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group().

We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.

CVSS Base Scores

version 3.1