A flaw was found in GStreamer. An integer overflow vulnerability in the AV1 LEB128 variable-length integer parser allows a remote attacker to cause a crash in applications that process AV1 media content. By crafting a malformed AV1 bitstream containing an invalid LEB128-encoded value, an attacker can cause integer overflow in the parser, resulting in incorrect length values being used during stream processing, which can lead to a denial of service.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://access.redhat.com/security/cve/CVE-2026-119729
secalert@redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2564126
secalert@redhat.com
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11245
secalert@redhat.com
https://gstreamer.freedesktop.org/security/sa-2026-0014.html
secalert@redhat.com