CVE-2024-56576

Local kernel crash via stale polling timer

Published Dec 27, 2024 · Updated Aug 5, 2026

Use-after-free in the tc358743 media driver in Linux allows local users to crash the kernel during a failed device probe. When polling is enabled, tc358743_probe() arms a timer but its error path frees the driver's state without first deleting that timer. A later timer callback dereferences the freed state; exploitation requires a probe failure on compatible I2C video-bridge hardware and interrupts the host by crashing the kernel.

CVSS severity4.7
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the tc358743 media driver in Linux allows local users to crash the kernel during a failed device probe. When polling is enabled, tc358743_probe() arms a timer but its error path frees the driver's state without first deleting that timer. A later timer callback dereferences the freed state; exploitation requires a probe failure on compatible I2C video-bridge hardware and interrupts the host by crashing the kernel.

The record

CVE
CVE-2024-56576
Published
Dec 27, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.13
  2. Affected versionversion=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <13193a97ddd5a6a5b11408ddbc1ae85588b1860c
  3. Affected versionversion=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <1def915b1564f4375330bd113ea1d768a569cfd8
  4. Affected versionversion=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <34a3466a92f50c51d984f0ec2e96864886d460eb
  5. Affected versionversion=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <5c9ab34c87af718bdbf9faa2b1a6ba41d15380ea
  6. Affected versionversion=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <815d14147068347e88c258233eb951b41b2792a6
  7. Affected versionversion=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <869f38ae07f7df829da4951c3d1f7a2be09c2e9a
  8. Affected versionversion=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <b59ab89bc83f7bff67f78c6caf484a84a6dd30f7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <13193a97ddd5a6a5b11408ddbc1ae85588b1860c; version=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <1def915b1564f4375330bd113ea1d768a569cfd8; version=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <34a3466a92f50c51d984f0ec2e96864886d460eb; version=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <5c9ab34c87af718bdbf9faa2b1a6ba41d15380ea; version=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <815d14147068347e88c258233eb951b41b2792a6; version=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <869f38ae07f7df829da4951c3d1f7a2be09c2e9a; version=4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a <b59ab89bc83f7bff67f78c6caf484a84a6dd30f7

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7Canonical Ubuntu SecurityCVSS:3.1/AV:L/AC:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo