ksmbd: fix out-of-bounds in parse_sec_desc()

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commit d6e13e1906 upstream.

If osidoffset, gsidoffset and dacloffset could be greater than smb_ntsd
struct size. If it is smaller, It could cause slab-out-of-bounds.
And when validating sid, It need to check it included subauth array size.

Cc: stable@vger.kernel.org
Reported-by: Norbert Szetei <norbert@doyensec.com>
Tested-by: Norbert Szetei <norbert@doyensec.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Namjae Jeon 2025-02-18 22:49:50 +09:00 • committed by Greg Kroah-Hartman

parent 76861630b2

commit c1569dbbe2

1 changed files with 16 additions and 0 deletions

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fs/smb/server/smbacl.c

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