CVE-2026-1940— Gstreamer: incomplete fix of cve-2026-1940
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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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|---|
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- 2436932 – (CVE-2026-1940) CVE-2026-1940 gstreamer: incomplete fix of CVE-2026-1940issue-trackingx_refsource_REDHAT
- https://nvd.nist.gov/vuln/detail/CVE-2026-1940
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
- CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constr - CVE-2026-42010
Gnutls: gnutls: authentication bypass via nul character in u - CVE-2026-6420
Keylime: keylime: security bypass due to hardcoded tpm quote - CVE-2026-34002
Xorg: xwayland: x.org x server: information disclosure or de - CVE-2026-34000
Xwayland: xorg: x.org x server: information disclosure and d
Same vendor: Red Hat
- CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constr - CVE-2026-42010
Gnutls: gnutls: authentication bypass via nul character in u - CVE-2026-6420
Keylime: keylime: security bypass due to hardcoded tpm quote - CVE-2026-34956
Openvswitch: open vswitch: denial of service via malformed f - CVE-2026-34002
Xorg: xwayland: x.org x server: information disclosure or de
V. Comments for CVE-2026-1940
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