RHSA-2026:47731HighCVSS 7.5

Red Hat Security Advisory: gstreamer1-plugins-bad-free security update

Published
July 30, 2026
Last Modified
July 30, 2026

🔗 CVE IDs covered (2)

CVE-2026-59691 →CVE-2026-59692 →

📋 Description

CVE-2026-59691 — gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer CVE-2026-59692 — gstreamer: gstreamer: DTLS certificate Subject DN stack buffer overflow in openssl_verify_callback

🎯 Affected products33

  • Red Hat Enterprise Linux AppStream (v. 8)
  • Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-0:1.16.1-9.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-0:1.16.1-9.el8_10.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-0:1.16.1-9.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-0:1.16.1-9.el8_10.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-0:1.16.1-9.el8_10.1.src as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-0:1.16.1-9.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.i686 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.s390x as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debuginfo-0:1.16.1-9.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.i686 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.s390x as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • gstreamer1-plugins-bad-free-debugsource-0:1.16.1-9.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-devel-0:1.16.1-9.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • gstreamer1-plugins-bad-free-devel-0:1.16.1-9.el8_10.1.i686 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • +3 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: There is no complete mitigation for this vulnerability. The following measures can reduce risk: 1. Do not connect GStreamer pipelines using rfbsrc to untrusted or unknown VNC servers. 2. If the rfbsrc plugin is not required, remove the librfb plugin shared object from the GStreamer plugins directory (typically /usr/lib64/gstreamer-1.0/libgstrfbsrc.so). 3. Network-level controls (firewall rules) can restrict outbound VNC connections to trusted servers only. Workaround: There is no complete mitigation for this vulnerability. The following measures can reduce risk: 1. If WebRTC/DTLS functionality is not required, remove the DTLS plugin shared object from the GStreamer plugins directory (typically /usr/lib64/gstreamer-1.0/libgstdtls.so). 2. Restrict network access to WebRTC/DTLS endpoints to trusted peers only via firewall rules. 3. Deploy GStreamer WebRTC services behind a reverse proxy or media server that validates DTLS certificates before forwarding.

🔗 References (5)