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VulnerabilityPublished Updated

CVE-2026-18649: Red Hat Enterprise Linux 10 · Unthrottled Resource Allocation

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 61% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10gstreamer1-plugins-goodAffected–Fixed in–
Red Hat Enterprise Linux 10.0 Extended Update Supportgstreamer1-plugins-goodAffected–Fixed in–
Red Hat Enterprise Linux 7 Extended Lifecycle Supportgstreamer1-plugins-goodAffected–Fixed in–
Red Hat Enterprise Linux 8gstreamer1-plugins-goodAffected–Fixed in–
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportgstreamer1-plugins-goodAffected–Fixed in–
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Ongstreamer1-plugins-goodAffected–Fixed in–

AI-suggested

A patch is available for Red Hat Enterprise Linux 9 as per Red Hat Advisory RHSA-2026:53452. Before patching, mitigations include: 1) Using SRTP or DTLS-SRTP to provide per-packet authentication and reject unauthenticated RTP fragments before they reach the vulnerable depayloaders; 2) Applying network-level restrictions (firewall rules) to allow RTP traffic only from trusted, authenticated sources; 3) Disabling the RTP plugin at build time with the "-Drtp=disabled" option; 4) Preventing auto-plugging of rtph264depay and rtph265depay elements by setting GST_PLUGIN_FEATURE_RANK=rtph264depay:0,rtph265depay:0. These mitigations reduce or eliminate the attack surface until an official fix is applied.

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.

References

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