net: inet6: do not leave a dangling sk pointer in inet6_create()

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[ Upstream commit 9df99c395d ]

sock_init_data() attaches the allocated sk pointer to the provided sock
object. If inet6_create() fails later, the sk object is released, but the
sock object retains the dangling sk pointer, which may cause use-after-free
later.

Clear the sock sk pointer on error.

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/20241014153808.51894-8-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 16:38:06 +01:00 • committed by Greg Kroah-Hartman

parent 3e8258070b

commit 276a473c95

1 changed files with 10 additions and 12 deletions

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net/ipv6/af_inet6.c

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