SB20260806101 - SUSE update for gstreamer-plugins-bad
Published: August 6, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2026-12892)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information or cause a denial of service.
The vulnerability exists due to an out-of-bounds read in the H.264 NAL unit parser when parsing crafted H.264 bitstreams. A remote attacker can provide a specially crafted H.264 stream containing undersized slice NAL units to disclose sensitive information or cause a denial of service.
The issue affects slice NAL types that use multi-byte extension headers for MVC and SVC profiles, and can be reached through media files, network streams, or web content.
2) Improper Authentication (CVE-ID: CVE-2026-14935)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to improper authentication in webrtcbin SDP fingerprint validation when processing remote descriptions for active media sections. A remote attacker can strip fingerprint attributes from remote SDP signaling to bypass authentication.
This weakens the WebRTC check that binds the DTLS certificate to the signaled identity.
3) Out-of-bounds write (CVE-ID: CVE-2026-52720)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to out-of-bounds read and out-of-bounds write in the rfbsrc element when processing crafted RFB protocol data. A remote attacker can send crafted framebuffer update messages with rectangle coordinates extending beyond the framebuffer boundaries to execute arbitrary code.
The issue can also be triggered by connecting to a crafted VNC server.
4) Out-of-bounds read (CVE-ID: CVE-2026-52721)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information or cause a denial of service.
The vulnerability exists due to out-of-bounds read in the pcapparse element when parsing a crafted PCAP file with malformed IPv4 or TCP header fields. A remote attacker can provide a specially crafted PCAP file to disclose sensitive information or cause a denial of service.
User interaction is required to open or process a crafted PCAP file.
5) Integer overflow (CVE-ID: CVE-2026-52722)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service or disclose sensitive information.
The vulnerability exists due to integer overflow in vmncdec element when parsing crafted VMNC streams with cursor rectangle data. A remote attacker can send a specially crafted VMNC stream to cause a denial of service or disclose sensitive information.
The issue occurs during cursor payload size computation using signed integer arithmetic, which can produce a negative length value that bypasses a subsequent short-packet check.
6) Out-of-bounds read (CVE-ID: CVE-2026-53702)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds read in the H.265 parser when parsing buffering period SEI messages in a crafted H.265 media file. A remote attacker can provide a specially crafted H.265 media file to cause a denial of service.
User interaction is required to process the crafted media file.
7) Stack-based buffer overflow (CVE-ID: CVE-2026-59692)
CWE-ID: CWE-121 - Stack-based buffer overflow
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to stack-based buffer overflow in the DTLS connection implementation when verifying peer certificates during the DTLS handshake. A remote attacker can send a certificate with an oversized Subject DN to execute arbitrary code.
The issue can also cause a process crash or data corruption, and can be triggered by a DTLS-SRTP or WebRTC peer during handshake verification.
Remediation
Install update from vendor's website.