cifs: fix underflow in parse_server_interfaces()

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In this loop, we step through the buffer and after each item we check
if the size_left is greater than the minimum size we need.  However,
the problem is that "bytes_left" is type ssize_t while sizeof() is type
size_t.  That means that because of type promotion, the comparison is
done as an unsigned and if we have negative bytes left the loop
continues instead of ending.

Fixes: fe856be475 ("CIFS: parse and store info on iface queries")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

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Dan Carpenter 2024-02-08 13:18:46 +03:00 • committed by Steve French

parent 841c351693

commit cffe487026

1 changed files with 1 additions and 1 deletions

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fs/smb/client/smb2ops.c

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