Not yet scoredPublished Dec 8, 2025

CVE-2023-53845nilfs2: fix infinite loop in nilfs_mdt_get_block()

Updated under an hour ago (Oct 26, 2026, 8:40 PM ET)

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Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from bdb265eae08db578e7cf5739be16f389d495fc75 before cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2; from bdb265eae08db578e7cf5739be16f389d495fc75 before d536f9976bb04e9c84cf80045a9355975e418f41; from bdb265eae08db578e7cf5739be16f389d495fc75 before fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0; from bdb265eae08db578e7cf5739be16f389d495fc75 before 8a89d36a07afe1ed4564df51fefa2bb556c85412; from bdb265eae08db578e7cf5739be16f389d495fc75 before 8d07d9119642ba43d21f8ba64d51d01931096b20; from bdb265eae08db578e7cf5739be16f389d495fc75 before 25457d07c8146e57d28906c663def033dc425af6; from bdb265eae08db578e7cf5739be16f389d495fc75 before 34c5f17222b50c79848bb03ec8811648813e6a45; from bdb265eae08db578e7cf5739be16f389d495fc75 before 5b29661669cb65b9750a3cf70ed3eaf947b92167; and 1 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2
https://git.kernel.org/stable/c/d536f9976bb04e9c84cf80045a9355975e418f41
https://git.kernel.org/stable/c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0
https://git.kernel.org/stable/c/8a89d36a07afe1ed4564df51fefa2bb556c85412
https://git.kernel.org/stable/c/8d07d9119642ba43d21f8ba64d51d01931096b20
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/a6a491c048882e7e424d407d32cba0b52d9ef2bf

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.