libav AVI File Parser buffer.c av_buffer_unref null pointer dereference

Summary

CVE	CVE-2025-8584
State	PUBLISHED
Assigner	VulDB
Source Priority	CVE Program / NVD first with legacy fallback
Published	2025-08-05 17:15:30 UTC
Updated	2026-04-29 01:00:01 UTC
Description	A vulnerability classified as problematic was found in libav up to 12.3. Affected by this vulnerability is the function av_buffer_unref of the file libavutil/buffer.c of the component AVI File Parser. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The bug was initially reported by the researcher to the wrong project. This vulnerability only affects products that are no longer supported by the maintainer.

Risk And Classification

Primary CVSS: v4.0 1.9 LOW from [email protected]

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-404 | CWE-476 | CWE-476 NULL Pointer Dereference | CWE-404 Denial of Service

Version	Source	Type	Score	Severity	Vector
4.0	[email protected]	Secondary	1.9	LOW	`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/C...`
4.0	CNA	DECLARED	4.8	MEDIUM	`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`
3.1	[email protected]	Secondary	3.3	LOW	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L`
3.1	CNA	DECLARED	3.3	LOW	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R`
3.0	CNA	DECLARED	3.3	LOW	`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R`
2.0	[email protected]	Secondary	1.7		`AV:L/AC:L/Au:S/C:N/I:N/A:P`
2.0	CNA	DECLARED	1.7		`AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR`

CVSS v4.0 Breakdown

Attack Vector

Local

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Confidentiality

None

Integrity

None

Availability

Low

Sub Conf.

None

Sub Integrity

None

Sub Availability

None

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.0 Breakdown

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Application	Libav	Libav	All	All	All	All

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Na	Libav	affected 12.0	Not specified
CNA	Na	Libav	affected 12.1	Not specified
CNA	Na	Libav	affected 12.2	Not specified
CNA	Na	Libav	affected 12.3	Not specified

References

Reference	Source	Link	Tags
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
trac.ffmpeg.org/ticket/11679	134c704f-9b21-4f2e-91b3-4a467353bcc0	trac.ffmpeg.org	Exploit
drive.google.com/file/d/1OwDNHuTbZFNTDX9afmvez_old3oRC7dM/view	[email protected]	drive.google.com	Exploit
vuldb.com	[email protected]	vuldb.com	Permissions Required, VDB Entry
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

Additional Advisory Data

Source	Time	Event
CNA	2025-08-05T00:00:00.000Z	Advisory disclosed
CNA	2025-08-05T02:00:00.000Z	VulDB entry created
CNA	2025-08-05T11:02:47.000Z	VulDB entry last update

There are currently no legacy QID mappings associated with this CVE.