CVE-2026-125270

MediumCVSS 5.3/10Last modified Nov 10, 2026

Description

FFmpeg through 9.0.2 contains a heap out-of-bounds read vulnerability in v4l2_buffer_swframe_to_buf() in libavcodec/v4l2_buffers.c that mishandles frames with negative linesize. Attackers can supply bottom-up AVI or PNM/PFM files that are transcoded to a V4L2 M2M encoder, crashing the application or leaking heap memory into encoded output.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H

Weakness enumeration

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Nov 9, 2026
Last modified
Nov 10, 2026
NVD status
Awaiting Analysis

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CVE-2026-125270: Medium severity, CVSS 5.3 | Vulnix