CVE-2024-47757 - Linux Kernel Nilfs2 Out of Bounds Read Vulnerability

CVE ID : CVE-2024-47757
Published : Oct. 21, 2024, 1:15 p.m. | 24 minutes ago
Description : 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.
Severity: 0.0 | NA
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