Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()

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[ Upstream commit 7c4f78cdb8 ]

bt_sock_alloc() allocates the sk object and attaches it to the provided
sock object. On error l2cap_sock_alloc() frees the sk object, but the
dangling pointer is still attached to the sock object, which may create
use-after-free in other code.

Signed-off-by: Ignat Korchagin <ignat@cloudflare.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241014153808.51894-3-ignat@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Ignat Korchagin 2024-10-14 16:38:01 +01:00 • committed by Greg Kroah-Hartman

parent a6cf750b73

commit bb2f2342a6

1 changed files with 1 additions and 0 deletions

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net/bluetooth/l2cap_sock.c

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