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CVE-2026-121601— Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds read in mxfdemux via unchecked delta_id and slice index

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 MXF 解复用器插件（gst-plugins-bad）中发现了一个漏洞。当处理特制的 MXF 媒体文件时，该解复用器会使用文件中的值来索引其内部的 delta-entry 和 slice-offset 表，但未验证这些值是否位于已分配数组的合法范围内。本地攻击者若诱使用户打开恶意的 MXF 文件，可导致应用程序崩溃（拒绝服务），并可能读取受影响数组相邻堆内存中的少量数据。

CVSS 6.1 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unaffected
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 any affected
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I. Basic Information for CVE-2026-121601

Vulnerability Information
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Vulnerability Title
Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds read in mxfdemux via unchecked delta_id and slice index
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in GStreamer's MXF demuxer plugin (gst-plugins-bad). When processing a specially crafted MXF media file, the demuxer indexes its internal delta-entry and slice-offset tables using values from the file without validating that they are within the bounds of the allocated arrays. A local attacker who tricks a user into opening a malicious MXF file can cause the application to crash (denial of service) and may be able to read limited amounts of heap memory adjacent to the affected arrays.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
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 6 - cpe:/o:redhat:rhel_els:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:rhel_els:7
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-2026-121601

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III. Intelligence Information for CVE-2026-121601

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Other References for CVE-2026-121601 (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-2026-122056 5.9 MEDIUM Openscap: one-byte heap buffer overflow in sds-compose may lead to denial-of-service
CVE-2026-125041 5.5 MEDIUM Gst-plugins-good: gst-plugins-good: qtdemux out-of-bounds heap read from invalid uncompres
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-125