CVE-2026-18297

GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of OGG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29584.

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-base packages contain a collection of well-maintained base plug-ins.

Security Fix(es):

• gstreamer: GStreamer: Arbitrary code execution via OGG file parsing buffer overflow (CVE-2026-18297)

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.

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-base packages contain a collection of well-maintained base plug-ins.

Security Fix(es):

• gstreamer: GStreamer: Arbitrary code execution via OGG file parsing buffer overflow (CVE-2026-18297)

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.

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-base packages contain a collection of well-maintained base plug-ins.

Security Fix(es):

• gstreamer: GStreamer: Arbitrary code execution via OGG file parsing buffer overflow (CVE-2026-18297)

• gstreamer1-plugins-base: gstreamer: NULL/invalid-pointer dereference in gst_rtsp_message_parse_auth_credentials() when parsing a crafted Digest Authorization/WWW-Authenticate header (CVE-2026-85150)

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.

GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of OGG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29584.

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-base packages contain a collection of well-maintained base plug-ins.

Security Fix(es):

• gstreamer: GStreamer: Arbitrary code execution via OGG file parsing buffer overflow (CVE-2026-18297)

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.

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-base packages contain a collection of well-maintained base plug-ins.

Security Fix(es):

• gstreamer: GStreamer: Arbitrary code execution via OGG file parsing buffer overflow (CVE-2026-18297)

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.

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-base packages contain a collection of well-maintained base plug-ins.

Security Fix(es):

• gstreamer: GStreamer: Arbitrary code execution via OGG file parsing buffer overflow (CVE-2026-18297)
• gstreamer1-plugins-base: gstreamer: NULL/invalid-pointer dereference in gst_rtsp_message_parse_auth_credentials() when parsing a crafted Digest Authorization/WWW-Authenticate header (CVE-2026-85150)

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.

GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of OGG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29584.

• CVE-2026-18297: opusdec: don't use any channel positions for more than 64 channels, preventing out-of-bounds writes to the fixed-size 64-element channel position array in gst_opus_dec_negotiate()
• CVE-2026-85150: rtsp/message: use the end of the item after skipping whitespace when parsing an auth credential value, preventing a negative length being passed to g_strndup() in parse_auth_credentials()

• rebase onto Oracle 1.10.4-2.0.3.el7, which brings the vendor's own backports as Patch1001-Patch1005
• drop 3 of the 4 TuxCare CVE backports in favour of the vendor's copies
• CVE-2024-47615: carry the two halves of our backport the vendor omits. Its Patch1003 adds the bounds guards to gst_parse_vorbis_setup_packet() but leaves the function declared void, so the five return -1 statements it writes are discarded and is_header_vorbis() still reports a malformed vorbis setup packet as a valid header; and it guards only against underrunning the ogg packet, where ours also stopped both advance loops from running past op->packet + op->bytes
• CVE-2024-47607: the vendor's Patch1001 bounds the write into the caller's pos[64] but not the two memcpys in gst_opus_dec_negotiate(), which copy n_channels entries - up to 255 from the Opus ID header - into the 64-entry dec->opus_pos; take upstream 178ae5ac, which drops the positions above 64 channels
• 1004-video-info-Sanity-check-the-frame-size-to.patch carries no CVE reference in the vendor's commit message; it is taken as a hardening change, with upstream 3d7a5666 on top so its overflow guard stops overflowing itself

• rebase onto Oracle 1.10.4-2.0.3.el7, which brings the vendor's own backports as Patch1001-Patch1005
• drop 3 of the 4 TuxCare CVE backports in favour of the vendor's copies
• CVE-2024-47615: carry the two halves of our backport the vendor omits. Its Patch1003 adds the bounds guards to gst_parse_vorbis_setup_packet() but leaves the function declared void, so the five return -1 statements it writes are discarded and is_header_vorbis() still reports a malformed vorbis setup packet as a valid header; and it guards only against underrunning the ogg packet, where ours also stopped both advance loops from running past op->packet + op->bytes
• CVE-2024-47607: the vendor's Patch1001 bounds the write into the caller's pos[64] but not the two memcpys in gst_opus_dec_negotiate(), which copy n_channels entries - up to 255 from the Opus ID header - into the 64-entry dec->opus_pos; take upstream 178ae5ac, which drops the positions above 64 channels
• 1004-video-info-Sanity-check-the-frame-size-to.patch carries no CVE reference in the vendor's commit message; it is taken as a hardening change, with upstream 3d7a5666 on top so its overflow guard stops overflowing itself

• CVE-2026-18297: opusdec: don't use channel positions for more than 64 channels, preventing an out-of-bounds write in gst_opus_dec_negotiate()
• CVE-2026-85150: rtsp/message: fix negative length passed to g_strndup() when an auth param value starts with whitespace

GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. (CVE-2026-18297)

It was discovered that GStreamer Base Plugins incorrectly handled certain OGG media files. A remote attacker could possibly use this issue to execute arbitrary code if it opened a specially crafted file.