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.
Affected products
freedesktop: gst-plugins-good; gstreamer: gstreamer; debian: debian linux; redhat: enterprise linux
References5
- access.redhat.com/security/cve/CVE-2026-1940 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2436932 Issue TrackingVendor Advisory
- gstreamer.freedesktop.org/security/sa-2026-0001.html Vendor Advisory
- gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854 Broken Link
- security-tracker.debian.org/tracker/CVE-2026-1940 Third Party Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 15 · as of 12 November 2026
- CWE
- CWE-125
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