ksmbd: fix buffer validation by including null terminator size in EA length

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commit 95d7a890e4 upstream.

The smb2_set_ea function, which handles Extended Attributes (EA),
was performing buffer validation checks that incorrectly omitted the size
of the null terminating character (+1 byte) for EA Name.
This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where
the null terminator is expected to be present in the buffer, ensuring
the validation accurately reflects the total required buffer size.

Cc: stable@vger.kernel.org
Reported-by: Roger <roger.andersen@protonmail.com>
Reported-by: Stanislas Polu <spolu@dust.tt>
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 2025-12-14 15:06:34 +09:00 • committed by Greg Kroah-Hartman

parent 02e06785e8

commit d26af6d14d

1 changed files with 2 additions and 2 deletions

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fs/smb/server/smb2pdu.c

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