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CVE-2026-53702 on CTRL-OS 26.05

Aliases: CVE-2026-53702

Packages: gst_all_1.gst-plugins-bad

Status: Plausible

Advisory Information

A stack buffer overflow flaw was found in the GStreamer H.265 codec parser library (gst-plugins-bad). When parsing a buffering period SEI message, the parser uses an incorrect loop bound derived from cpb_cnt_minus1[i] (the loop index) instead of the sub-layer 0 CPB count cpb_cnt_minus1[0] from the referenced Sequence Parameter Set. A crafted H.265 video file or stream can cause the parser to write beyond the bounds of stack-allocated CPB delay arrays, resulting in a crash or potential stack memory corruption.

Updates

2026-07-10 01:20 CEST

Metadata changes:

  • Status for package gst_all_1.gst-plugins-bad: “Plausible”

2026-07-06 23:08 CEST

Metadata changes:

  • Status for package gst_all_1.gst-plugins-bad: “New”

(Amended on: 2026-07-06 23:09 CEST)