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Change History

In the Linux kernel, the following vulnerability has been resolved:

cifs: fix underflow in parse_server_interfaces()

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.

kernel.org https://git.kernel.org/stable/c/7190353835b4a219abb70f90b06cdcae97f11512 [No types assigned]

kernel.org https://git.kernel.org/stable/c/cffe487026be13eaf37ea28b783d9638ab147204 [No types assigned]

kernel.org https://git.kernel.org/stable/c/df2af9fdbc4ddde18a3371c4ca1a86596e8be301 [No types assigned]

kernel.org https://git.kernel.org/stable/c/f7ff1c89fb6e9610d2b01c1821727729e6609308 [No types assigned]