partitions: mac: fix handling of bogus partition table

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: partitions: mac: fix handling of bogus partition table Fix several issues in partition probing: - The bailout for a bad partoffset must use put_dev_sector(), since the preceding read_part_sector() succeeded. - If the partition table claims a silly sector size like 0xfff bytes (which results in partition table entries straddling sector boundaries), bail out instead of accessing out-of-bounds memory. - We must not assume that the partition table contains proper NUL termination - use strnlen() and strncmp() instead of strlen() and strcmp().

References

• https://git.kernel.org/stable/c/a3e77da9f843e4ab93917d30c314f0283e28c124
• https://git.kernel.org/stable/c/213ba5bd81b7e97ac6e6190b8f3bc6ba76123625
• https://git.kernel.org/stable/c/40a35d14f3c0dc72b689061ec72fc9b193f37d1f
• https://git.kernel.org/stable/c/27a39d006f85e869be68c1d5d2ce05e5d6445bf5
• https://git.kernel.org/stable/c/92527100be38ede924768f4277450dfe8a40e16b
• https://git.kernel.org/stable/c/6578717ebca91678131d2b1f4ba4258e60536e9f
• https://git.kernel.org/stable/c/7fa9706722882f634090bfc9af642bf9ed719e27
• https://git.kernel.org/stable/c/80e648042e512d5a767da251d44132553fe04ae0