Description
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix infinite loop in nilfs_mdt_get_block()
If the disk image that nilfs2 mounts is corrupted and a virtual block address obtained by block lookup for a metadata file is invalid, nilfs_bmap_lookup_at_level() may return the same internal return code as -ENOENT, meaning the block does not exist in the metadata file.
This duplication of return codes confuses nilfs_mdt_get_block(), causing it to read and create a metadata block indefinitely.
In particular, if this happens to the inode metadata file, ifile, semaphore i_rwsem can be left held, causing task hangs in lock_mount.
Fix this issue by making nilfs_bmap_lookup_at_level() treat virtual block address translation failures with -ENOENT as metadata corruption instead of returning the error code.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= bdb265eae08db578e7cf5739be16f389d495fc75, < cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2; >= bdb265eae08db578e7cf5739be16f389d495fc75, < d536f9976bb04e9c84cf80045a9355975e418f41; >= bdb265eae08db578e7cf5739be16f389d495fc75, < fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0; >= bdb265eae08db578e7cf5739be16f389d495fc75, < 8a89d36a07afe1ed4564df51fefa2bb556c85412; >= bdb265eae08db578e7cf5739be16f389d495fc75, < 8d07d9119642ba43d21f8ba64d51d01931096b20; >= bdb265eae08db578e7cf5739be16f389d495fc75, < 25457d07c8146e57d28906c663def033dc425af6; >= bdb265eae08db578e7cf5739be16f389d495fc75, < 34c5f17222b50c79848bb03ec8811648813e6a45; >= bdb265eae08db578e7cf5739be16f389d495fc75, < 5b29661669cb65b9750a3cf70ed3eaf947b92167; >= bdb265eae08db578e7cf5739be16f389d495fc75, < a6a491c048882e7e424d407d32cba0b52d9ef2bf |
| Linux | Linux | 2.6.30 |
References
- https://git.kernel.org/stable/c/25457d07c8146e57d28906c663def033dc425af6
- https://git.kernel.org/stable/c/34c5f17222b50c79848bb03ec8811648813e6a45
- https://git.kernel.org/stable/c/5b29661669cb65b9750a3cf70ed3eaf947b92167
- https://git.kernel.org/stable/c/8a89d36a07afe1ed4564df51fefa2bb556c85412
- https://git.kernel.org/stable/c/8d07d9119642ba43d21f8ba64d51d01931096b20
- https://git.kernel.org/stable/c/a6a491c048882e7e424d407d32cba0b52d9ef2bf
- https://git.kernel.org/stable/c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2
- https://git.kernel.org/stable/c/d536f9976bb04e9c84cf80045a9355975e418f41
- https://git.kernel.org/stable/c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0
Timeline
- Published
- Dec 9, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Deferred