Ignat KorchaginandGreg Kroah-Hartman 6021ccc247 Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc() ...

[ Upstream commit 3945c799f1 ]

bt_sock_alloc() attaches allocated sk object to the provided sock object.
If rfcomm_dlc_alloc() fails, we release the sk object, but leave the
dangling pointer in the sock object, which may cause use-after-free.

Fix this by swapping calls to bt_sock_alloc() and rfcomm_dlc_alloc().

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/20241014153808.51894-4-ignat@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-12-14 20:00:04 +01:00

..

core.c

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Kconfig

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Makefile

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sock.c

Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc()

2024-12-14 20:00:04 +01:00

tty.c

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