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VulnerabilityPublished Updated

CVE-2026-43015: Linux kernel · net: macb: fix clk handling on PCI glue driver removal

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 12 Nov 2026, 00:50 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 2026

  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 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Linux LinuxAffected
  • 4.14.249 – 5.14.9
5 affected builds
Fixed in–

AI-suggested

A fix for this vulnerability is available in the Linux kernel versions that include the relevant patch. Users should upgrade to a fixed kernel version to remediate this issue. Since this is a kernel-level flaw, applying the official kernel update is the recommended mitigation.

Description

CVE-2026-43015 is a use-after-free vulnerability in the Linux kernel's macb network driver related to clock (clk) handling during PCI glue driver removal. The issue occurs because platform_device_unregister() may still attempt to use registered clocks during runtime resume callbacks, leading to a use-after-free condition. The vulnerability has been addressed by saving pointers to clocks into local variables before the platform device is unregistered to prevent invalid memory access.

References

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