- Vulnerability/
- CVE-2024-39469
CVE-2024-39469: nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors
First published: Tue Jun 25 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cd
- https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82
- https://git.kernel.org/stable/c/2ac8a2fe22bdde9eecce2a42cf5cab79333fb428
- https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3
- https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5
- https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81c
- https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1
- https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346
- https://git.kernel.org/linus/7373a51e7998b508af7136530f3a997b286ce81c
- https://security-tracker.debian.org/tracker/CVE-2024-39469
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-39469
- https://nvd.nist.gov/vuln/detail/CVE-2024-39469
- https://launchpad.net/bugs/cve/CVE-2024-39469
- https://ubuntu.com/security/CVE-2024-39469
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