Description
A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Enterprise Linux 10
Default version status: affected
0:1.26.7-2.el10_2.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
Default version status: affected
0:1.24.11-1.el10_0.4 to < *unaffected
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
Default version status: affected
0:1.10.4-4.el7_9.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:1.16.1-7.el8_10.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Default version status: affected
0:1.16.1-4.el8_4.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Default version status: affected
0:1.16.1-4.el8_4.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Default version status: affected
0:1.16.1-4.el8_6.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
Default version status: affected
0:1.16.1-4.el8_6.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Default version status: affected
0:1.16.1-5.el8_8.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Default version status: affected
0:1.16.1-5.el8_8.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:1.22.12-7.el9_8.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Default version status: affected
0:1.18.4-8.el9_2.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Default version status: affected
0:1.22.1-4.el9_4.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
Default version status: affected
0:1.22.12-5.el9_6.2 to < *unaffected
References
- https://0xsemizzz.vercel.app/projects/cve-2026-18649-gstreamer-rtp-dos/ ↗
- https://access.redhat.com/errata/RHSA-2026:53451 ↗
- https://access.redhat.com/errata/RHSA-2026:53452 ↗
- https://access.redhat.com/errata/RHSA-2026:56966 ↗
- https://access.redhat.com/errata/RHSA-2026:61588 ↗
- https://access.redhat.com/errata/RHSA-2026:61943 ↗
- https://access.redhat.com/errata/RHSA-2026:65959 ↗
- https://access.redhat.com/errata/RHSA-2026:65999 ↗
- https://access.redhat.com/errata/RHSA-2026:69232 ↗
- https://access.redhat.com/errata/RHSA-2026:70264 ↗
- https://access.redhat.com/errata/RHSA-2026:70584 ↗
- https://access.redhat.com/errata/RHSA-2026:70803 ↗
- https://access.redhat.com/security/cve/CVE-2026-18649 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2510614 ↗
- https://github.com/0xSemizzz/CVE-2026-18649 ↗
- https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/113 ↗