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

Fixed packages 4

Vulnerabilities 2

• High 7.5
  CVE-2026-59692

  Gstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback

  A stack buffer overflow vulnerability was found in GStreamer's DTLS plugin. During a DTLS handshake, the peer certificate Subject Distinguished Name is printed into a fixed-size 2048-byte stack buffer without bounds checking. A remote unauthenticated attacker…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu
  Jul 9, 2026
• High 7.1
  CVE-2026-59691

  Gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb hextile heap out-of-bounds write with 16bpp framebuffer

  A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel value…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 6 Linux Debian Ubuntu
  Jul 9, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2497343
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2497344
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54752.json
• report
  https://access.redhat.com/security/cve/CVE-2026-59691
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-59691
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-59691
• article
  https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/100
• article
  https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5173
• report
  https://access.redhat.com/security/cve/CVE-2026-59692
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-59692
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-59692
• article
  https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/99
• article
  https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5172