{"cve":"CVE-2023-53845","nvd":{"published":"2025-12-09T16:17:24.860","modified":"2026-06-17T06:46:10.363","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix infinite loop in nilfs_mdt_get_block()\n\nIf the disk image that nilfs2 mounts is corrupted and a virtual block\naddress obtained by block lookup for a metadata file is invalid,\nnilfs_bmap_lookup_at_level() may return the same internal return code as\n-ENOENT, meaning the block does not exist in the metadata file.\n\nThis duplication of return codes confuses nilfs_mdt_get_block(), causing\nit to read and create a metadata block indefinitely.\n\nIn particular, if this happens to the inode metadata file, ifile,\nsemaphore i_rwsem can be left held, causing task hangs in lock_mount.\n\nFix this issue by making nilfs_bmap_lookup_at_level() treat virtual block\naddress translation failures with -ENOENT as metadata corruption instead\nof returning the error code.","cvss_v4":null,"cvss_v3":null,"cwes":[],"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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2023-53845","score":0.00257,"percentile":0.17443,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}