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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-18649

CVE-2026-18649: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-18649] unbounded memory growth in rtph264depay and rtph265depay RTP depayloaders

    CVE-2026-18649Source published Source updated

    unbounded memory growth in rtph264depay and rtph265depay RTP depayloaders. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:53451 with package gstreamer1-plugins-good-0:1.26.7-2.el10_2.3, gstreamer1-plugins-good-0:1.22.12-7.el9_8.2, gstreamer1-plugins-good-0:1.16.1-7.el8_10.3. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8.

    Affected products in this advisory
    • Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
    • Red Hat Enterprise Linux 9.6 Extended Update Support
    • Red Hat Enterprise Linux 10.0 Extended Update Support
    • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

    7 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • gstreamer1-plugins-good-0:1.26.7-2.el10_2.3
    • gstreamer1-plugins-good-0:1.22.12-7.el9_8.2
    • gstreamer1-plugins-good-0:1.16.1-7.el8_10.3
    • RHSA-2026:53451
    Mitigation guidance
    • The following mitigations can reduce risk before a patch is available: 1. Use SRTP or DTLS-SRTP: Deploy the srtpdec element in the pipeline before the depayloader. SRTP provides per-packet authentication and will reject unauthenticated fragments before they reach rtph264depay/rtph265depay, completely preventing exploitation. 2. Network-level restriction: Use firewall rules (iptables/nftables) to restrict which sources can send RTP traffic to the GStreamer process. Allow RTP only from trusted, authenticated peers. 3. Build-time exclusion: Disable the entire RTP plugin by configuring with "-Drtp=disabled" in meson build options. This removes all RTP functionality including the vulnerable depayloaders. 4. Runtime element exclusion: Prevent the affected elements from being auto-plugged by setting GST_PLUGIN_FEATURE_RANK=rtph264depay:0,rtph265depay:0. This prevents automatic selection but not explicit pipeline construction.
    Full advisory and evidenceOpen source bulletin

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