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CVE-2026-1940— Gstreamer: incomplete fix of cve-2026-1940

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开源的一套用于处理流媒体的框架。 GStreamer存在安全漏洞，该漏洞源于对CVE-2024-47778的修复不完整，gst_wavparse_adtl_chunk()函数存在越界读取，当lsize为奇数时，解析器推进的字节数超过验证范围。

CVSS 5.1 · Medium EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-1940

Vulnerability Information
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Vulnerability Title
Gstreamer: incomplete fix of cve-2026-1940
Source: CVE Program / CVE List V5
Vulnerability Description
An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
GStreamer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GStreamer是GStreamer开源的一套用于处理流媒体的框架。 GStreamer存在安全漏洞，该漏洞源于对CVE-2024-47778的修复不完整，gst_wavparse_adtl_chunk()函数存在越界读取，当lsize为奇数时，解析器推进的字节数超过验证范围。
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 - cpe:/o:redhat:enterprise_linux:10
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
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-1940

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III. Intelligence Information for CVE-2026-1940

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Vendor Advisories for CVE-2026-1940 (3)

Other References for CVE-2026-1940 (1)

Same Patch Batch · Red Hat · 2026-03-23 · 4 CVEs total

CVE-2026-4647 6.1 MEDIUM Binutils: out-of-bounds read in xcoff relocation processing in gnu binutils bfd library
CVE-2026-4628 4.3 MEDIUM Keycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to
CVE-2026-4633 3.7 LOW Keycloak: keycloak: user enumeration via differential error messages

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat

V. Comments for CVE-2026-1940

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