CVE-2024-42224: Linux kernel · net: dsa: mv88e6xxx: Correct check for empty list
Source GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 29 Oct 2026, 22:52 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Jul 2024
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 29 Oct 2026.
Description
In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: Correct check for empty list Since commit a3c53be55c95 ("net: dsa: mv88e6xxx: Support multiple MDIO busses") mv88e6xxx_default_mdio_bus() has checked that the return value of list_first_entry() is non-NULL. This appears to be intended to guard against the list chip->mdios being empty. However, it is not the correct check as the implementation of list_first_entry is not designed to return NULL for empty lists. Instead, use list_first_entry_or_null() which does return NULL if the list is empty. Flagged by Smatch. Compile tested only.
References
- nvd.nist.gov/vuln/detail/CVE-2024-42224 (opens in a new tab)
- git.kernel.org/stable/c/2a2fe25a103cef73cde356e6d09da10f607e93f5 (opens in a new tab)
- git.kernel.org/stable/c/3bf8d70e1455f87856640c3433b3660a31001618 (opens in a new tab)
- git.kernel.org/stable/c/3f25b5f1635449036692a44b771f39f772190c1d (opens in a new tab)
- git.kernel.org/stable/c/47d28dde172696031c880c5778633cdca30394ee (opens in a new tab)
- git.kernel.org/stable/c/4c7f3950a9fd53a62b156c0fe7c3a2c43b0ba19b (opens in a new tab)
- git.kernel.org/stable/c/8c2c3cca816d074c75a2801d1ca0dea7b0148114 (opens in a new tab)
- git.kernel.org/stable/c/aa03f591ef31ba603a4a99d05d25a0f21ab1cd89 (opens in a new tab)
- git.kernel.org/stable/c/f75625db838ade28f032dacd0f0c8baca42ecde4 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)