Out-of-bounds Write Affecting libperf package, versions <0:5.14.0-687.59.1.el9_8


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-ORACLE9-LIBPERF-21773492
  • published28 Oct 2026
  • disclosed19 Jul 2026

Introduced: 19 Jul 2026

CVE-2026-63899  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:9 libperf to version 0:5.14.0-687.59.1.el9_8 or higher.
This issue was patched in ELSA-2026-86033.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libperf package and not the libperf package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

USB: serial: mxuport: fix memory corruption with small endpoint

Make sure that the bulk-out endpoint max packet size is at least eight bytes to avoid user-controlled slab corruption should a malicious device report a smaller size.

CVSS Base Scores

version 3.1