RHSA-2026:56658: Important: gstreamer1-plugins-bad-free security update
GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer.Security Fix(es): gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer (CVE-2026-59691) gstreamer: gstreamer: DTLS certificate Subject DN stack buffer overflow in opensslverifycallback (CVE-2026-59692) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Other sources
Important: gstreamer1-plugins-bad-free security update
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/gstreamer1-plugins-bad-freeto a version that resolves this vulnerability.Fixed in 1.18.4-9.el9_2.5 - Upgrade
Upgrade
redhat/gstreamer1-plugins-bad-free-debuginfoto a version that resolves this vulnerability.Fixed in 1.18.4-9.el9_2.5 - Upgrade
Upgrade
redhat/gstreamer1-plugins-bad-free-debugsourceto a version that resolves this vulnerability.Fixed in 1.18.4-9.el9_2.5 - Upgrade
Upgrade
redhat/gstreamer1-plugins-bad-freeto a version that resolves this vulnerability.Fixed in 1.18.4-9.el9_2.5.aa - Upgrade
Upgrade
redhat/gstreamer1-plugins-bad-free-debuginfoto a version that resolves this vulnerability.Fixed in 1.18.4-9.el9_2.5.aa - Upgrade
Upgrade
redhat/gstreamer1-plugins-bad-free-debugsourceto a version that resolves this vulnerability.Fixed in 1.18.4-9.el9_2.5.aa - Upgrade
Upgrade
gstreamerto a version that resolves this vulnerability.Patch CVE-2026-59692 - Upgrade
Upgrade
gstreamer1-plugins-bad-freeto a version that resolves this vulnerability.Patch CVE-2026-59691
Event History
Frequently Asked Questions
Which components are implicated by the reported flaws?
The reported issues affect the rfbsrc/librfb Hextile handling path for a 16bpp framebuffer and the DTLS certificate Subject DN handling in openssl_verify_callback.
What types of memory-safety issues are addressed?
CVE-2026-59691 is described as a heap out-of-bounds write, while CVE-2026-59692 is described as a stack buffer overflow. The supplied information does not specify exploitation prerequisites, affected configurations, or mitigations.