CVE-2026-1940

An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.

Score

CVSS 3.1 7.5 High

Status

Analyzed - secalert@redhat.com

Published

2026-03-23

Last modified

2026-03-24

Weaknesses

CWE-125

Affected products

• Debian Linux (Debian)
• Gst-plugins-good (Freedesktop)
• Gstreamer (Gstreamer)
• Enterprise Linux (Redhat)

References

• https://access.redhat.com/security/cve/CVE-2026-1940
• https://bugzilla.redhat.com/show_bug.cgi?id=2436932
• https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854
• https://gstreamer.freedesktop.org/security/sa-2026-0001.html
• https://security-tracker.debian.org/tracker/CVE-2026-1940