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VulnerabilityPublished Updated

CVE-2024-56599: Linux kernel · wifi: ath10k: avoid NULL pointer error during sdio remove

Affects Linux kernelSource GCVE Database

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Not known to be exploited · CVSS 5.5 Medium · fixed in 5.4.0-1146.156~18.04.1 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:11 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 5.4.0-1146.156~18.04.1, 5.4.0-1151.158~18.04.1, 5.4.0-1149.158~18.04.1 +84
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Dec 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-58.60
Fixed in
  • 6.8.0-58.60
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1027.29
Fixed in
  • 6.8.0-1027.29
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1027.32
Fixed in
  • 6.8.0-1027.32
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threatsAffected
  • <6.11.0-1012.12~24.04.1
Fixed in
  • 6.11.0-1012.12~24.04.1
Ubuntu 24.04 LTSlinux-azure-nvidiapkg:deb/ubuntu/linux-azure-nvidia?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1014.15
Fixed in
  • 6.8.0-1014.15
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1028.30
Fixed in
  • 6.8.0-1028.30

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch fixing the issue is available and included in multiple Linux kernel versions starting from 5.4.0-1146.156~18.04.1 and later. Users should upgrade to these fixed kernel versions to remediate the vulnerability. No additional mitigation is required as the fix corrects the cleanup order to prevent the NULL pointer dereference.

Description

CVE-2024-56599 is a medium severity vulnerability in the Linux kernel's ath10k WiFi driver. It involves a NULL pointer dereference that can cause a kernel panic during the removal of the ath10k SDIO driver module when CONFIG_INIT_ON_FREE_DEFAULT_ON is enabled. The issue arises from an incorrect order of resource cleanup, where destroy_workqueue() is called after the workqueue pointer is freed and set to NULL, leading to a NULL pointer dereference. This flaw has been fixed in multiple Linux kernel versions.

References

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