CVE-2024-43833

Kernel oops via NULL ancillary-link source

Published Aug 17, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel allows local users to trigger a kernel oops through V4L2 ancillary-link creation. The v4l2_async_create_ancillary_links() function creates links for lens and flash sub-devices while treating a NULL source sub-device as valid when its notifier belongs to a V4L2 device. Reachability requires low-privileged local access and an affected V4L2 asynchronous-notifier configuration; the documented consequence is loss of availability, not data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel allows local users to trigger a kernel oops through V4L2 ancillary-link creation. The v4l2_async_create_ancillary_links() function creates links for lens and flash sub-devices while treating a NULL source sub-device as valid when its notifier belongs to a V4L2 device. Reachability requires low-privileged local access and an affected V4L2 asynchronous-notifier configuration; the documented consequence is loss of availability, not data disclosure or modification.

The record

CVE
CVE-2024-43833
Published
Aug 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.19
  2. Affected versionversion=aa4faf6eb27132532d5a133d9241254c16d4bafa <249212ceb4187783af3801c57b92a5a25d410621
  3. Affected versionversion=aa4faf6eb27132532d5a133d9241254c16d4bafa <9b4667ea67854f0b116fe22ad11ef5628c5b5b5f
  4. Affected versionversion=aa4faf6eb27132532d5a133d9241254c16d4bafa <b87e28050d9b0959de24574d587825cfab2f13fb
  5. Affected versionversion=aa4faf6eb27132532d5a133d9241254c16d4bafa <fe0f92fd5320b393e44ca210805e653ea90cc982

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=aa4faf6eb27132532d5a133d9241254c16d4bafa <249212ceb4187783af3801c57b92a5a25d410621; version=aa4faf6eb27132532d5a133d9241254c16d4bafa <9b4667ea67854f0b116fe22ad11ef5628c5b5b5f; version=aa4faf6eb27132532d5a133d9241254c16d4bafa <b87e28050d9b0959de24574d587825cfab2f13fb; version=aa4faf6eb27132532d5a133d9241254c16d4bafa <fe0f92fd5320b393e44ca210805e653ea90cc982

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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