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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a3c53be55c955b7150cda17874c3fcb4eeb97a89 to < 47d28dde172696031c880c5778633cdca30394eeaffecteda3c53be55c955b7150cda17874c3fcb4eeb97a89 to < 3bf8d70e1455f87856640c3433b3660a31001618affecteda3c53be55c955b7150cda17874c3fcb4eeb97a89 to < 2a2fe25a103cef73cde356e6d09da10f607e93f5affecteda3c53be55c955b7150cda17874c3fcb4eeb97a89 to < 8c2c3cca816d074c75a2801d1ca0dea7b0148114affecteda3c53be55c955b7150cda17874c3fcb4eeb97a89 to < aa03f591ef31ba603a4a99d05d25a0f21ab1cd89affecteda3c53be55c955b7150cda17874c3fcb4eeb97a89 to < 3f25b5f1635449036692a44b771f39f772190c1daffecteda3c53be55c955b7150cda17874c3fcb4eeb97a89 to < f75625db838ade28f032dacd0f0c8baca42ecde4affecteda3c53be55c955b7150cda17874c3fcb4eeb97a89 to < 4c7f3950a9fd53a62b156c0fe7c3a2c43b0ba19baffected
Linux Linux
Default version status: affected
4.11affected0 to < 4.11unaffected4.19.318 to ≤ 4.19.*unaffected5.4.280 to ≤ 5.4.*unaffected5.10.222 to ≤ 5.10.*unaffected5.15.163 to ≤ 5.15.*unaffected6.1.98 to ≤ 6.1.*unaffected6.6.39 to ≤ 6.6.*unaffected6.9.9 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/47d28dde172696031c880c5778633cdca30394ee ↗
- https://git.kernel.org/stable/c/3bf8d70e1455f87856640c3433b3660a31001618 ↗
- https://git.kernel.org/stable/c/2a2fe25a103cef73cde356e6d09da10f607e93f5 ↗
- https://git.kernel.org/stable/c/8c2c3cca816d074c75a2801d1ca0dea7b0148114 ↗
- https://git.kernel.org/stable/c/aa03f591ef31ba603a4a99d05d25a0f21ab1cd89 ↗
- https://git.kernel.org/stable/c/3f25b5f1635449036692a44b771f39f772190c1d ↗
- https://git.kernel.org/stable/c/f75625db838ade28f032dacd0f0c8baca42ecde4 ↗
- https://git.kernel.org/stable/c/4c7f3950a9fd53a62b156c0fe7c3a2c43b0ba19b ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗