CVE-2026-12891

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.

This update for gstreamer-plugins-bad fixes the following issues

• CVE-2026-12891: unchecked aspect_ratio_idc value used as an array index in the H.266 parser could cause a global out- of-bounds read (bsc#1268872).
• CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
• CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
• CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
• CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
• CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
• CVE-2026-53701: multi-slice-in-tile partitions without slice index bounds checks could trigger an out-of-bounds write (bsc#1268172).
• CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
• CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).

This update for gstreamer-plugins-bad fixes the following issues

• CVE-2026-12891: unchecked aspect_ratio_idc value used as an array index in the H.266 parser could cause a global out- of-bounds read (bsc#1268872).
• CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
• CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
• CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
• CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
• CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
• CVE-2026-53701: multi-slice-in-tile partitions without slice index bounds checks could trigger an out-of-bounds write (bsc#1268172).
• CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
• CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).

This update for gstreamer-plugins-bad fixes the following issues

• CVE-2026-12891: unchecked aspect_ratio_idc value used as an array index in the H.266 parser could cause a global out- of-bounds read (bsc#1268872).
• CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
• CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
• CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
• CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
• CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
• CVE-2026-53701: multi-slice-in-tile partitions without slice index bounds checks could trigger an out-of-bounds write (bsc#1268172).
• CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
• CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).