hfs: Replace BUG_ON with error handling for CNID count checks

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In the Linux kernel, the following vulnerability has been resolved: hfs: Replace BUG_ON with error handling for CNID count checks In a06ec283e125 next_id, folder_count, and file_count in the super block info were expanded to 64 bits, and BUG_ONs were added to detect overflow. This triggered an error reported by syzbot: if the MDB is corrupted, the BUG_ON is triggered. This patch replaces this mechanism with proper error handling and resolves the syzbot reported bug. Singed-off-by: Jori Koolstra <[email protected]>

Source published

6 May 2026 11:28:26 UTC

Source modified

15 Oct 2026 10:07:13 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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