CVE-2026-1940
MEDIUM severity · CVSS 5.1 · Out-of-bounds read
5.1CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactLow
Availability impactLow
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://access.redhat.com/security/cve/CVE-2026-1940Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2436932Advisory
- https://gstreamer.freedesktop.org/security/sa-2026-0001.htmlAdvisory
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854
- https://security-tracker.debian.org/tracker/CVE-2026-1940Advisory