CVE-2026-43014: Linux kernel · net: macb: properly unregister fixed rate clocks
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 12 Nov 2026, 00:50 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 1 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
AI-suggested
A fix has been implemented in the Linux kernel to properly unregister fixed rate clocks in the macb driver. Users should update to the fixed kernel version once available to remediate this issue.
Description
A resource management vulnerability in the Linux kernel's macb network driver was fixed by ensuring that fixed rate clocks registered with clk_register_fixed_rate() are properly unregistered with clk_unregister_fixed_rate(). Failure to unregister these clocks could lead to resource leaks.
References
- git.kernel.org/stable/c/54c6f0e7682433abed0304ac2f5cb71a92d4b366 (opens in a new tab)
- git.kernel.org/stable/c/015aa24d3721a05b40935b8af78b49cadf616b8d (opens in a new tab)
- git.kernel.org/stable/c/ec1be2ce0d94506f11b22066fd6dc5eb4341b14f (opens in a new tab)
- git.kernel.org/stable/c/e1f6f47d6e60d51c3294e5b85787e9aee24c450e (opens in a new tab)
- git.kernel.org/stable/c/e35dbfdb1b7710f04ff5c9972ea04971d823a22d (opens in a new tab)
- git.kernel.org/stable/c/5392a5174df4f5a2fad2f00e8c617394d0efe031 (opens in a new tab)
- git.kernel.org/stable/c/6ec567425c057fd850651ee09b31d059ef960e0f (opens in a new tab)
- git.kernel.org/stable/c/f0f367a4f459cc8118aadc43c6bba53c60d93f8d (opens in a new tab)