afs: Fix double-unmap of directory block

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In the Linux kernel, the following vulnerability has been resolved: afs: Fix double-unmap of directory block Fix afs_edit_dir_remove() to use a cleanup function to unmap the block pointed to by afs_dir_iter::block if it's left pointing to something rather than manually kunmapping the blocks. Manually kunmapping without clearing iter.blocks can result in a double-kunmap if afs_dir_find_block() is called twice in a row (which would be the case if the block being modified is not first in the hash chain).

Source published

25 Sep 2026 10:22:04 UTC

Source modified

19 Oct 2026 09:09:48 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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