PT-2026-48724 · Red Hat · Red Hat Enterprise Linux 10+3

Published 2026-06-11 · Updated 2026-06-11 · CVE-2026-53701

Mitre

CVSS v3.1

6.5

Medium

Base vector

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

An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad. In the multi-slice-in-tile processing of gst h266 parser parse picture partition() (gsth266parser.c), the loop iterates without checking that the slice index stays within bounds, writing past three fixed-size arrays (slice height in ctus, slice top left ctu x, slice top left ctu y) in the GstH266PPS structure. While the initial proof-of-concept demonstrated a 4-byte out-of-bounds write, the code permits larger writes across multiple iterations. A crafted H.266/VVC media file can trigger this vulnerability.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-53701

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-53701 · Security Note
• https://access.redhat.com/security/cve/CVE-2026-53701 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2487611 · Note