CVE-2023-53845
nilfs2: fix infinite loop in nilfs_mdt_get_block()
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Timeline
ID reserved
By Linux
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.26% · top 83% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < d536f9976bb04e9c84cf80045a9355975e418f41
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < 8a89d36a07afe1ed4564df51fefa2bb556c85412
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < 8d07d9119642ba43d21f8ba64d51d01931096b20
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < 25457d07c8146e57d28906c663def033dc425af6
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < 34c5f17222b50c79848bb03ec8811648813e6a45
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < 5b29661669cb65b9750a3cf70ed3eaf947b92167
- affected bdb265eae08db578e7cf5739be16f389d495fc75 – < a6a491c048882e7e424d407d32cba0b52d9ef2bf
- affected 2.6.30
- unaffected < 2.6.30
- unaffected 4.14.315 – ≤ 4.14.*
- unaffected 4.19.283 – ≤ 4.19.*
- unaffected 5.4.243 – ≤ 5.4.*
- unaffected 5.10.180 – ≤ 5.10.*
- unaffected 5.15.111 – ≤ 5.15.*
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References (9)
- https://git.kernel.org/stable/c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2 (opens in a new tab)
- https://git.kernel.org/stable/c/d536f9976bb04e9c84cf80045a9355975e418f41 (opens in a new tab)
- https://git.kernel.org/stable/c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0 (opens in a new tab)
- https://git.kernel.org/stable/c/8a89d36a07afe1ed4564df51fefa2bb556c85412 (opens in a new tab)
- https://git.kernel.org/stable/c/8d07d9119642ba43d21f8ba64d51d01931096b20 (opens in a new tab)
- https://git.kernel.org/stable/c/25457d07c8146e57d28906c663def033dc425af6 (opens in a new tab)
- https://git.kernel.org/stable/c/34c5f17222b50c79848bb03ec8811648813e6a45 (opens in a new tab)
- https://git.kernel.org/stable/c/5b29661669cb65b9750a3cf70ed3eaf947b92167 (opens in a new tab)
- https://git.kernel.org/stable/c/a6a491c048882e7e424d407d32cba0b52d9ef2bf (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2023-53845)Record last updated .