[PATCH 6.18 63/83] rxrpc: Fix key parsing memleak

Greg Kroah-Hartman
2026-04-13T16:09:33Z

From: David Howells <dhowells@redhat.com>

commit b555912b9b21075e8298015f888ffe3ff60b1a97 upstream.

In rxrpc_preparse_xdr_yfs_rxgk(), the memory attached to token->rxgk can be
leaked in a few error paths after it's allocated.

Fix this by freeing it in the "reject_token:" case.

Fixes: 0ca100ff4df6 ("rxrpc: Add YFS RxGK (GSSAPI) security class")
Closes: https://sashiko.dev/#/patchset/20260319150150.4189381-1-dhowells%40redhat.com
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Jeffrey Altman <jaltman@auristor.com>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
cc: stable@kernel.org
Link: https://patch.msgid.link/20260408121252.2249051-3-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/rxrpc/key.c | 1 +
1 file changed, 1 insertion(+)

--- a/net/rxrpc/key.c
+++ b/net/rxrpc/key.c
@@ -274,6 +274,7 @@ nomem_token:
nomem:
return -ENOMEM;
reject_token:
+ kfree(token->rxgk);
kfree(token);
reject:
return -EKEYREJECTED;