CVE-2025-39997

Scores

EPSS

0.000none0.0%
0%20%40%60%80%100%

Percentile: 0.0%

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free The previous commit 0718a78f6a9f (“ALSA: usb-audio: Kill timer properly at removal”) patched a UAF issue caused by the error timer. However, because the error timer kill added in this patch occurs after the endpoint delete, a race condition to UAF still occurs, albeit rarely. Additionally, since kill-cleanup for urb is also missing, freed memory can be accessed in interrupt context related to urb, which can cause UAF. Therefore, to prevent this, error timer and urb must be killed before freeing the heap memory.

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Sources

debianubuntu

Vulnerable Software (164)

Type: Configuration

Product: linux

Operating System: debian

Trait:
{  "fixed": "6.16.11-1"}

Source: debian

Type: Configuration

Product: linux

Operating System: debian bookworm 12

Trait:
{  "unaffected": true}

Source: debian

Type: Configuration

Product: linux

Operating System: debian bullseye 11

Trait:
{  "unaffected": true}

Source: debian

Type: Configuration

Product: linux

Operating System: ubuntu bionic 18.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu focal 20.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu jammy 22.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu trusty 14.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu xenial 16.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux-allwinner-5.19

Operating System: ubuntu jammy 22.04

Trait:
{  "unfixed": true}

Source: ubuntu

Type: Configuration

Product: linux-aws

Operating System: ubuntu bionic 18.04

Trait:
{  "unaffected": true}

Source: ubuntu