CVE-2024-39469High· 7.1▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors The error handling in nilfs_empty_dir() when a directory folio/page read fails is incorrect, as i…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
0.2% → 0.3%
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors
The error handling in nilfs_empty_dir() when a directory folio/page read fails is incorrect, as in the old ext2 implementation, and if the folio/page cannot be read or nilfs_check_folio() fails, it will falsely determine the directory as empty and corrupt the file system.
In addition, since nilfs_empty_dir() does not immediately return on a failed folio/page read, but continues to loop, this can cause a long loop with I/O if i_size of the directory's inode is also corrupted, causing the log writer thread to wait and hang, as reported by syzbot.
Fix these issues by making nilfs_empty_dir() immediately return a false value (0) if it fails to get a directory folio/page.
linux_kernel >= 2.6.30, < 4.19.317linux_kernel >= 4.20, < 5.4.279linux_kernel >= 5.5, < 5.10.221linux_kernel >= 5.11, < 5.15.162linux_kernel >= 5.16, < 6.1.95linux_kernel >= 6.2, < 6.6.35linux_kernel >= 6.7, < 6.9.5linux_kernel = 6.10Upgrade past the affected range:
linux_kernel 6.9.5Connected by shared product, vendor, weakness, or advisory.
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