CVE-2024-47757
nilfs2: fix potential oob read in nilfs_btree_check_delete()
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nilfs2: fix potential oob read in nilfs_btree_check_delete()
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential oob read in nilfs_btree_check_delete() The function nilfs_btree_check_delete(), which checks whether degeneration to direct mapping occurs before deleting a b-tree entry, causes memory access outside the block buffer when retrieving the maximum key if the root node has no entries. This does not usually happen because b-tree mappings with 0 child nodes are never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen if the b-tree root node read from a device is configured that way, so fix this potential issue by adding a check for that case.
Reserved 2024-09-30 | Published 2024-10-21 | Updated 2024-12-19 | Assigner Linuxgit.kernel.org/...c/f3a9859767c7aea758976f5523903d247e585129
git.kernel.org/...c/ed76d381dae125b81d09934e365391a656249da8
git.kernel.org/...c/d20674f31626e0596ae4c1d9401dfb6739b81b58
git.kernel.org/...c/c4f8554996e8ada3be872dfb8f60e93bcf15fb27
git.kernel.org/...c/a8abfda768b9f33630cfbc4af6c4214f1e5681b0
git.kernel.org/...c/257f9e5185eb6de83377caea686c306e22e871f2
git.kernel.org/...c/a33e967b681e088a125b979975c93e3453e686cd
git.kernel.org/...c/c4cbcc64bb31e67e02940ce060cc77f7180564cf
git.kernel.org/...c/f9c96351aa6718b42a9f42eaf7adce0356bdb5e8
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