PT-2026-64353 · Linux · Linux
CVE-2026-64238
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Publicado
2026-07-24
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Atualizado
2026-07-24
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In the Linux kernel, the following vulnerability has been resolved:
gpio: shared: fix deadlock on shared proxy's parent removal
Commit 710abda58055 ("gpio: shared: call gpio chip::of xlate() if set")
used the mutex embedded in struct gpio shared entry to protect the
offset field which now can be modified after assignment. The critical
section however is too wide and introduced a potential deadlock on the
removal of the shared GPIO proxy's parent.
Make the critical section shorter - only protect the offset when it's
being read.
While at it: mention the fact that the entry lock is now also used to
protect against concurrent access to the offset field in the structure's
documentation.
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