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CVE-2026-43228: hfs: Replace BUG_ON with error handling for CNID count checks

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 <jkoolstra@xs4all.nl>

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Vulnerability profileCVE Program record
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Unknown
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VendorProductVersion / packageStatus
LinuxLinuxa06ec283e125e334155fe13005c76c9f484ce759, a06ec283e125e334155fe13005c76c9f484ce759, a06ec283e125e334155fe13005c76c9f484ce759unaffected
LinuxLinux6.18, 0, 6.18.57, 6.19.6, 7.0affected
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