CVE-2024-49874

Kernel memory corruption via I3C removal race

Published Oct 21, 2024 · Updated Aug 5, 2026

A use-after-free in affected Linux SVC I3C master drivers allows local users to corrupt kernel memory during device removal. svc_i3c_master_remove() unregisters and frees master->base without first canceling hj_work and ibi_work, allowing concurrent work to pass the freed object to i3c_master_do_daa(). Reachability requires local low-privileged access, the SVC I3C master driver, and a race between removal cleanup and queued work.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A use-after-free in affected Linux SVC I3C master drivers allows local users to corrupt kernel memory during device removal. svc_i3c_master_remove() unregisters and frees master->base without first canceling hj_work and ibi_work, allowing concurrent work to pass the freed object to i3c_master_do_daa(). Reachability requires local low-privileged access, the SVC I3C master driver, and a race between removal cleanup and queued work.

The record

CVE
CVE-2024-49874
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <27b55724d3f781dd6e635e89dc6e2fd78fa81a00
  2. Affected versionversion=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <4318998892bf8fe99f97bea18c37ae7b685af75a
  3. Affected versionversion=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <4ac637122930cc4ab7e2c22e364cf3aaf96b05b1
  4. Affected versionversion=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <61850725779709369c7e907ae8c7c75dc7cec4f3
  5. Affected versionversion=6.4
  6. Affected versionversion=87e0f28eda36c7843523aa8dd0c5dab3331e9718 <56bddf543d4d7ddeff3f87b554ddacfdf086bffe

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <27b55724d3f781dd6e635e89dc6e2fd78fa81a00; version=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <4318998892bf8fe99f97bea18c37ae7b685af75a; version=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <4ac637122930cc4ab7e2c22e364cf3aaf96b05b1; version=0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7 <61850725779709369c7e907ae8c7c75dc7cec4f3; version=6.4; version=87e0f28eda36c7843523aa8dd0c5dab3331e9718 <56bddf543d4d7ddeff3f87b554ddacfdf086bffe

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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-416Use After Free

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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