apparmor: fix NULL sock in aa_sock_file_perm

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[ Upstream commit 00b6765753 ]

Deal with the potential that sock and sock-sk can be NULL during
socket setup or teardown. This could lead to an oops. The fix for NULL
pointer dereference in __unix_needs_revalidation shows this is at
least possible for af_unix sockets. While the fix for af_unix sockets
applies for newer mediation this is still the fall back path for older
af_unix mediation and other sockets, so ensure it is covered.

Fixes: 56974a6fcf ("apparmor: add base infastructure for socket mediation")
Reviewed-by: Georgia Garcia <georgia.garcia@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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John Johansen 2025-11-24 15:07:42 -08:00 • committed by Sasha Levin

parent 77d2e4d03d

commit 3852eb9a03

1 changed files with 4 additions and 2 deletions

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security/apparmor/net.c

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