CVE-2024-26590

In the Linux kernel, the following vulnerability has been resolved: erofs:
fix inconsistent per-file compression format EROFS can select compression
algorithms on a per-file basis, and each per-file compression algorithm
needs to be marked in the on-disk superblock for initialization. However,
syzkaller can generate inconsistent crafted images that use an unsupported
algorithmtype for specific inodes, e.g. use MicroLZMA algorithmtype even
it’s not set in sbi->available_compr_algs. This can lead to an unexpected
“BUG: kernel NULL pointer dereference” if the corresponding decompressor
isn’t built-in. Fix this by checking against sbi->available_compr_algs
for each m_algorithmformat request. Incorrect !erofs_sb_has_compr_cfgs
preset bitmap is now fixed together since it was harmless previously.