{"cve":"CVE-2023-53337","nvd":{"published":"2025-09-17T15:15:36.793","modified":"2026-06-17T06:44:55.900","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: do not write dirty data after degenerating to read-only\n\nAccording to syzbot's report, mark_buffer_dirty() called from\nnilfs_segctor_do_construct() outputs a warning with some patterns after\nnilfs2 detects metadata corruption and degrades to read-only mode.\n\nAfter such read-only degeneration, page cache data may be cleared through\nnilfs_clear_dirty_page() which may also clear the uptodate flag for their\nbuffer heads.  However, even after the degeneration, log writes are still\nperformed by unmount processing etc., which causes mark_buffer_dirty() to\nbe called for buffer heads without the \"uptodate\" flag and causes the\nwarning.\n\nSince any writes should not be done to a read-only file system in the\nfirst place, this fixes the warning in mark_buffer_dirty() by letting\nnilfs_segctor_do_construct() abort early if in read-only mode.\n\nThis also changes the retry check of nilfs_segctor_write_out() to avoid\nunnecessary log write retries if it detects -EROFS that\nnilfs_segctor_do_construct() returned.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/13f73ef77baa4764dc1ca4fcbae9cade05b83866","https://git.kernel.org/stable/c/28a65b49eb53e172d23567005465019658bfdb4d","https://git.kernel.org/stable/c/4005cec6847c06ee191583270b7cdd7e696543cc","https://git.kernel.org/stable/c/4569a292a84e340e97d178898ad1cfe1a3080a61","https://git.kernel.org/stable/c/55f7810632f993cff622a0ddbc7c865892294b61"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:10:08.713834912+00:00"},"epss":{"cve":"CVE-2023-53337","score":0.00207,"percentile":0.10872,"date":"2026-10-31"},"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."]}