CVE-2024-43833

media: v4l: async: Fix NULL pointer dereference in adding ancillary links

MEDIUM
5.5
CVSS Score
Published: August 17, 2024 at 09:21 AM UTC
Updated: June 17, 2026 at 07:51 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: media: v4l: async: Fix NULL pointer dereference in adding ancillary links In v4l2_async_create_ancillary_links(), ancillary links are created for lens and flash sub-devices. These are sub-device to sub-device links and if the async notifier is related to a V4L2 device, the source sub-device of the ancillary link is NULL, leading to a NULL pointer dereference. Check the notifier's sd field is non-NULL in v4l2_async_create_ancillary_links(). [Sakari Ailus: Reword the subject and commit messages slightly.]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.19 ≤ v < 6.1.1035.19 ≤ v < 6.10.35.19 ≤ v < 6.115.19 ≤ v < 6.6.446.2 ≤ v < 6.6.446.7 ≤ v < 6.10.35.19aa4faf6eb27132532d5a133d9241254c16d4bafa
Vendor states this is fixed in 249212ceb4187783af3801c57b92a5a25d410621 (fixed)
Vendor states this is fixed in 9b4667ea67854f0b116fe22ad11ef5628c5b5b5f (fixed)
Vendor states this is fixed in b87e28050d9b0959de24574d587825cfab2f13fb (fixed)
Vendor states this is fixed in fe0f92fd5320b393e44ca210805e653ea90cc982 (fixed)
Vendor states this is fixed in 5.19 (unaffected)
Vendor states this is fixed in 6.1.103 (unaffected)
Vendor states this is fixed in 6.10.3 (unaffected)
Vendor states this is fixed in 6.11 (unaffected)
Vendor states this is fixed in 6.6.44 (unaffected)

References (5)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/249212ceb4187783af3801c57b92a5a25d410621
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9b4667ea67854f0b116fe22ad11ef5628c5b5b5f
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b87e28050d9b0959de24574d587825cfab2f13fb
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/fe0f92fd5320b393e44ca210805e653ea90cc982
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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