CVE-2026-1940

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.

CVSS v3 5.1 MEDIUM

5.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-1940	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2436932	Issue Tracking Vendor Advisory
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854	Broken Link
https://gstreamer.freedesktop.org/security/sa-2026-0001.html	Vendor Advisory
https://security-tracker.debian.org/tracker/CVE-2026-1940	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:freedesktop:gst-plugins-good:1.0.0:::::::*
	cpe:2.3:a:gstreamer:gstreamer::::::::
	cpe:2.3:o:debian:debian_linux:11.0:::::::*
	cpe:2.3:o:debian:debian_linux:12.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

No history.

Information

Published : 2026-03-23 22:16

Updated : 2026-06-17 10:16

NVD link : CVE-2026-1940

Mitre link : CVE-2026-1940

CVE.ORG link : CVE-2026-1940

JSON object : View

Products Affected

freedesktop

gst-plugins-good

gstreamer

gstreamer

debian

debian_linux

redhat

enterprise_linux

CWE

CWE-125

Out-of-bounds Read

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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."}, {"lang": "es", "value": "Una soluci\u00f3n incompleta para CVE-2024-47778 permite una lectura fuera de l\u00edmites en la funci\u00f3n gst_wavparse_adtl_chunk(). El parche a\u00f1adi\u00f3 una comprobaci\u00f3n de validaci\u00f3n de tama\u00f1o lsize + 8 > size, pero no tiene en cuenta el GST_ROUND_UP_2(lsize) utilizado en el c\u00e1lculo real del desplazamiento. Cuando lsize es un n\u00famero impar, el analizador avanza m\u00e1s bytes de los validados, provocando una lectura OOB."}], "lastModified": "2026-06-17T10:16:45.207", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:freedesktop:gst-plugins-good:1.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A77F116D-9B57-44B4-8F86-C5BCF105C56E"}, {"criteria": "cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1F1B75B8-0527-487E-8F53-A658F7A1E7A5", "versionEndExcluding": "1.28.1"}, {"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"}, {"criteria": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}