CVE-2023-54123: md/raid10: fix memleak for 'conf->bio_split'

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-24 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix memleak for 'conf->bio_split' In the error path of raid10_run(), 'conf' need be freed, however, 'conf->bio_split' is missed and memory will be leaked. Since there are 3 places to free 'conf', factor out a helper to fix the problem.

Affected products

Linux kernel: 4.12 — fixed in 6.4

How to fix

Upgrade to a fixed version: Linux kernel 6.4. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/133008af833b4f2e021d2c294c29c70364a3f0ba
https://git.kernel.org/stable/c/5cba3e26c073b535e4e3b825ea481fb29c53943b
https://git.kernel.org/stable/c/6361b0592b46c465ac926c1f3105d66c30d9658b
https://git.kernel.org/stable/c/7f673fa34c0e3f95ee951a1bbf61791164871d2e
https://git.kernel.org/stable/c/b21019a220d9cac08819bb6c63000de9ee61eb9e
https://git.kernel.org/stable/c/b6460f68c1cc95a80d089af402be501619f228e4
https://git.kernel.org/stable/c/c9ac2acde53f5385de185bccf6aaa91cf9ac1541
https://git.kernel.org/stable/c/e2fec8d95353a48634b085011626ba3ec8ab8b1c

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