CVE-2026-1940
Gstreamer: incomplete fix of cve-2026-1940
CVSS Score
5.1
EPSS Score
0.0%
EPSS Percentile
2th
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.
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Mar 23, 2026 |
| Last Updated | Mar 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-1940 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2436932 gitlab.freedesktop.org: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854 gstreamer.freedesktop.org: https://gstreamer.freedesktop.org/security/sa-2026-0001.html security-tracker.debian.org: https://security-tracker.debian.org/tracker/CVE-2026-1940
Credits
Red Hat would like to thank wooseokdotkim for reporting this issue.