dlm: validate length in dlm_search_rsb_tree

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The len parameter in dlm_dump_rsb_name() is not validated and comes
from network messages. When it exceeds DLM_RESNAME_MAXLEN, it can
cause out-of-bounds write in dlm_search_rsb_tree().

Add length validation to prevent potential buffer overflow.

Signed-off-by: Ezrak1e <ezrakiez@gmail.com>
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>

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Ezrak1e 2026-01-20 10:35:06 -05:00 • committed by David Teigland

parent 1416bd508c

commit 080e5563f8

1 changed files with 2 additions and 1 deletions

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fs/dlm/lock.c

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