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CVE-2026-52718— Gstreamer1-plugins-bad-free: gstreamer: denial of service via av1 tile_list_obu parser byte/bit confusion

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GStreamer是GStreamer组织开源的一套用于处理流媒体的框架。 GStreamer存在异常处理不当漏洞，该漏洞源于gst-plugins-bad中的AV1 codec解析器中gst_av1_parser_parse_tile_list_obu()函数将字节计数传递给期望位计数的位读取器API，导致解析器失步，远程攻击者可能诱骗用户打开特制的AV1媒体文件，触发断言异常，导致应用程序崩溃。

CVSS 6.5 · Medium EPSS 0.39% · P32

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 10

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 0:1.26.7-2.el10_2.4< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.24.11-3.el10_0.4< * unaffected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any unaffected
any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 0:1.22.12-7.el9_8.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.18.4-9.el9_2.3< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.22.1-6.el9_4.4< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.22.12-5.el9_6.4< * unaffected
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I. Basic Information for CVE-2026-52718

Vulnerability Information
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Vulnerability Title
Gstreamer1-plugins-bad-free: gstreamer: denial of service via av1 tile_list_obu parser byte/bit confusion
Source: CVE Program / CVE List V5
Vulnerability Description
A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit count, causing parser desynchronization. A remote attacker could trick a user into opening a specially crafted AV1 media file, triggering an assertion abort and causing the application to crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
GStreamer 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GStreamer是GStreamer组织开源的一套用于处理流媒体的框架。 GStreamer存在异常处理不当漏洞，该漏洞源于gst-plugins-bad中的AV1 codec解析器中gst_av1_parser_parse_tile_list_obu()函数将字节计数传递给期望位计数的位读取器API，导致解析器失步，远程攻击者可能诱骗用户打开特制的AV1媒体文件，触发断言异常，导致应用程序崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 0:1.26.7-2.el10_2.4 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.24.11-3.el10_0.4 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 9 0:1.22.12-7.el9_8.1 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.18.4-9.el9_2.3 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.22.1-6.el9_4.4 ~ * cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.22.12-5.el9_6.4 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8

II. Public POCs for CVE-2026-52718

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III. Intelligence Information for CVE-2026-52718

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Patches & Fixes for CVE-2026-52718 (1)

Vendor Advisories for CVE-2026-52718 (8)

Same Patch Batch · Red Hat · 2026-06-15 · 9 CVEs total

CVE-2026-52720 8.8 HIGH Gstreamer1-plugins-bad-free: gstreamer: heap buffer overflow via crafted vnc server rectan
CVE-2026-53705 7.6 HIGH Gstreamer1-plugins-good: gstreamer: heap buffer overflow in wavpack decoder via integer ov
CVE-2026-52722 7.1 HIGH Gstreamer1-plugins-bad-free: gstreamer: signed integer overflow in vmnc decoder cursor pay
CVE-2026-53703 7.1 HIGH Gstreamer1-plugins-ugly-free: gstreamer: out-of-bounds read in realmedia demuxer audio str
CVE-2026-53704 7.1 HIGH Gstreamer1-plugins-ugly-free: gstreamer: out-of-bounds read in realmedia demuxer fileinfo
CVE-2026-52719 7.1 HIGH Gstreamer1-plugins-bad-free: gstreamer: out-of-bounds read via jpeg segment length validat
CVE-2026-52721 5.3 MEDIUM Gstreamer1-plugins-bad-free: gstreamer: multiple out-of-bounds reads in pcapparse ipv4/tcp
CVE-2026-44188 5.3 MEDIUM Ansible-lightspeed: ansible lightspeed: session hijacking and unauthorized data access due

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-617

V. Comments for CVE-2026-52718

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