CVE-2026-1940

Description

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.

References

https://security-tracker.debian.org/tracker/CVE-2026-1940

https://gstreamer.freedesktop.org/security/sa-2026-0001.html

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854

https://bugzilla.redhat.com/show_bug.cgi?id=2436932

https://access.redhat.com/security/cve/CVE-2026-1940

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS