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Change History

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

exfat: fix out-of-bounds access of directory entries

In the case of the directory size is greater than or equal to
the cluster size, if start_clu becomes an EOF cluster(an invalid
cluster) due to file system corruption, then the directory entry
where ei->hint_femp.eidx hint is outside the directory, resulting
in an out-of-bounds access, which may cause further file system
corruption.

This commit adds a check for start_clu, if

https://git.kernel.org/stable/c/184fa506e392eb78364d9283c961217ff2c0617b

https://git.kernel.org/stable/c/3ddd1cb2b458ff6a193bc845f408dfff217db29e

https://git.kernel.org/stable/c/a0120d6463368378539ef928cf067d02372efb8c