Out-of-bounds Write Affecting gst-plugins-bad1.0 package, versions <1.28.3-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.21% (11th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-GSTPLUGINSBAD10-17320732
  • published12 Jun 2026
  • disclosed11 Jun 2026

Introduced: 11 Jun 2026

CVE-2026-53701  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:unstable gst-plugins-bad1.0 to version 1.28.3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gst-plugins-bad1.0 package and not the gst-plugins-bad1.0 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1