CVE-2024-40969: f2fs: don't set RO when shutting down f2fs
First published: Fri Jul 12 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: f2fs: don't set RO when shutting down f2fs Shutdown does not check the error of thaw_super due to readonly, which causes a deadlock like below. f2fs_ioc_shutdown(F2FS_GOING_DOWN_FULLSYNC) issue_discard_thread - bdev_freeze - freeze_super - f2fs_stop_checkpoint() - f2fs_handle_critical_error - sb_start_write - set RO - waiting - bdev_thaw - thaw_super_locked - return -EINVAL, if sb_rdonly() - f2fs_stop_discard_thread -> wait for kthread_stop(discard_thread);
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.6.36 | |
| Linux Linux kernel | >=6.7<6.9.7 | |
| 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/1036d3ea7a32cb7cee00885c73a1f2ba7fbc499a
- https://git.kernel.org/stable/c/3bdb7f161697e2d5123b89fe1778ef17a44858e7
- https://git.kernel.org/stable/c/f47ed3b284b38f235355e281f57dfa8fffcc6563
- https://git.kernel.org/linus/3bdb7f161697e2d5123b89fe1778ef17a44858e7
- https://security-tracker.debian.org/tracker/CVE-2024-40969
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-40969
- https://nvd.nist.gov/vuln/detail/CVE-2024-40969
- https://launchpad.net/bugs/cve/CVE-2024-40969
- https://ubuntu.com/security/CVE-2024-40969
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