tipc: use kfree_sensitive() for session key material

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[ Upstream commit 74d9391e88 ]

The rx->skey field contains a struct tipc_aead_key with GCM-AES
encryption keys used for TIPC cluster communication. Using plain
kfree() leaves this sensitive key material in freed memory pages
where it could potentially be recovered.

Switch to kfree_sensitive() to ensure the key material is zeroed
before the memory is freed.

Fixes: 1ef6f7c939 ("tipc: add automatic session key exchange")
Signed-off-by: Daniel Hodges <hodgesd@meta.com>
Link: https://patch.msgid.link/20260131180114.2121438-1-hodgesd@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Daniel Hodges 2026-01-31 10:01:14 -08:00 • committed by Greg Kroah-Hartman

parent 73585e603d

commit 5003e92af2

1 changed files with 2 additions and 2 deletions

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net/tipc/crypto.c

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