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Advisory severityHigh8.8Red Hat Linux

High [CVE-2026-18299] Remote Code Execution via Use-After-Free in rtpsbcdepay

This high-severity Red Hat Linux advisory covers CVE-2026-18299 affecting Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 8).

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-18299 Source published Source updated

VulniPulse record published Record updated

CVE-2026-18299
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

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Summary

A flaw was found in GStreamer. This use-after-free vulnerability in the rtpsbcdepay element, specifically during the processing of Real-time Transport Protocol (RTP) payload elements, allows a remote attacker to execute arbitrary code.

The issue arises from a lack of validation for an object's existence before operations are performed on it. Successful exploitation can lead to arbitrary code execution within the context of the current process.

Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-386.

Affected Red Hat products: Red Hat Enterprise Linux AppStream EUS (v. Red Hat lists Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7 as not affected.

Red Hat fixing advisory: RHSA-2026:71650, RHSA-2026:59972, RHSA-2026:59179, RHSA-2026:71646, RHSA-2026:71647, RHSA-2026:71648, RHSA-2026:59152.

8); Red Hat Enterprise Linux AppStream E4S (v.9.2); and 8 more.

Affected products named by the advisory: Red Hat Enterprise Linux AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream E4S (v.9.4); and 7 more.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

Fixed versions
  • gstreamer1-plugins-good-0:1.24.11-1.el10_0.7.src
  • gstreamer1-plugins-good-0:1.26.7-2.el10_2.8.src
  • gstreamer1-plugins-good-0:1.16.1-7.el8_10.7.src
  • gstreamer1-plugins-good-0:1.18.4-8.el9_2.6.src
  • gstreamer1-plugins-good-0:1.22.1-4.el9_4.6.src
  • gstreamer1-plugins-good-0:1.22.12-5.el9_6.6.src
  • gstreamer1-plugins-good-0:1.22.12-7.el9_8.8.src
  • RHSA-2026:71650
  • RHSA-2026:59972
  • RHSA-2026:59179
  • RHSA-2026:71646
  • RHSA-2026:71647
  • RHSA-2026:71648
  • RHSA-2026:59152

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

Mitigation checklist

Temporary workarounds
  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

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