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CVE-2026-125041— Gst-plugins-good: gst-plugins-good: qtdemux out-of-bounds heap read from invalid uncompressed video layout

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.

在 GStreamer 的 gst-plugins-good 组件中，其 MOV/MP4 解复用器（demuxer）存在一个漏洞。在处理未压缩的视频轨道时，qtdemux 在利用声明的行对齐（row alignment）和色度几何（chroma geometry）构建视频缓冲区布局之前，未对其进行验证。攻击者可利用特制的文件在样本复制过程中触发堆越界读取，从而导致应用程序崩溃并引发拒绝服务（DoS）攻击。

CVSS 5.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-125041

Vulnerability Information
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Vulnerability Title
Gst-plugins-good: gst-plugins-good: qtdemux out-of-bounds heap read from invalid uncompressed video layout
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in GStreamer's gst-plugins-good MOV/MP4 demuxer. When processing an uncompressed video track, qtdemux fails to validate the declared row alignment and chroma geometry before using them to build a video buffer layout. A crafted file can cause an out-of-bounds heap read while the sample is copied, potentially crashing the application and causing denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1284
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/a:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/a:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/a:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-125041

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-125041

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Other References for CVE-2026-125041 (3)

Same Patch Batch · Red Hat · 2026-11-09 · 22 CVEs total

CVE-2026-12977 8.8 HIGH Org.wildfly.core/wildfly-server: wildfly: rbac bypass in wildfly deployment-operation hand
CVE-2026-19706 8.3 HIGH Openshift/installer: openshift installer: unconditional csr approval during agent-based in
CVE-2026-119610 8.2 HIGH Gstreamer1-plugins-good: gstreamer1-plugins-good: out-of-bounds heap read in mtap16/mtap24
CVE-2026-119079 7.5 HIGH Krb5: mit krb5 kdc unauthenticated cpu dos via quadratic asn.1 sequence of decoding
CVE-2026-121629 7.5 HIGH Gst-plugins-good: gst-plugins-good: local file disclosure via unvalidated file:// uris in
CVE-2026-112322 7.5 HIGH Krb5: mit krb5 kadmind unauthenticated cpu dos via auth_gssapi client states cleanup
CVE-2026-112323 7.5 HIGH Krb5: mit krb5 kadmind unauthenticated memory exhaustion via failed auth_gssapi_init reque
CVE-2026-112320 7.5 HIGH Krb5: mit krb5 kadmind unauthenticated memory leak dos via gss-rpc auth flavor switching
CVE-2026-112321 7.5 HIGH Krb5: mit krb5 kadmind unauthenticated memory leak dos via auth_gssapi_init error paths
CVE-2026-112314 7.5 HIGH Krb5: mit krb5 gss-rpc client memory leak on xid mismatch retries
CVE-2026-84503 6.7 MEDIUM Ansible-core: ansible-core: ansible.builtin.git invokes git without a `--` separator, allo
CVE-2026-112316 6.5 MEDIUM Krb5: mit krb5 kadmind authenticated memory leak dos in xdr_krb5_tl_data() decode failure
CVE-2026-112318 6.5 MEDIUM Krb5: mit krb5 kadmind authenticated dos exploiting dereference of null policy name pointe
CVE-2026-112319 6.5 MEDIUM Krb5: mit krb5 kadmind authenticated memory exhaustion dos via unbounded rpc xdr allocatio
CVE-2026-125040 6.5 MEDIUM Gst-plugins-base: gst-plugins-base: quadratic regex processing in srt/webvtt subtitle pars
CVE-2026-121611 6.5 MEDIUM Gstreamer1-plugins-bad-free: gst-plugins-bad: use of uninitialized gsth265hrdparams in gst
CVE-2026-121601 6.1 MEDIUM Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds read in mxfdemux v
CVE-2026-122056 5.9 MEDIUM Openscap: one-byte heap buffer overflow in sds-compose may lead to denial-of-service
CVE-2026-112317 5.3 MEDIUM Krb5: mit krb5 kdc unauthenticated memory leak dos in kdb keytab key decryption error path
CVE-2026-112315 5.3 MEDIUM Krb5: mit krb5 kadmind unauthenticated memory leak dos in rpcsec_gss buffer decode failure

Showing top 20 of 22 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-1284