{"cve":"CVE-2026-53050","nvd":{"published":"2026-06-24T17:17:16.887","modified":"2026-10-15T02:20:01.050","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nquota: Fix race of dquot_scan_active() with quota deactivation\n\ndquot_scan_active() can race with quota deactivation in\nquota_release_workfn() like:\n\n  CPU0 (quota_release_workfn)         CPU1 (dquot_scan_active)\n  ==============================      ==============================\n  spin_lock(&dq_list_lock);\n  list_replace_init(\n    &releasing_dquots, &rls_head);\n    /* dquot X on rls_head,\n       dq_count == 0,\n       DQ_ACTIVE_B still set */\n  spin_unlock(&dq_list_lock);\n  synchronize_srcu(&dquot_srcu);\n                                      spin_lock(&dq_list_lock);\n                                      list_for_each_entry(dquot,\n                                          &inuse_list, dq_inuse) {\n                                        /* finds dquot X */\n                                        dquot_active(X) -> true\n                                        atomic_inc(&X->dq_count);\n                                      }\n                                      spin_unlock(&dq_list_lock);\n  spin_lock(&dq_list_lock);\n  dquot = list_first_entry(&rls_head);\n  WARN_ON_ONCE(atomic_read(&dquot->dq_count));\n\nThe problem is not only a cosmetic one as under memory pressure the\ncaller of dquot_scan_active() can end up working on freed dquot.\n\nFix the problem by making sure the dquot is removed from releasing list\nwhen we acquire a reference to it.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-362"],"references":["https://git.kernel.org/stable/c/2bdc80f4619411e5bd4a3ef23f51e14021ed457c","https://git.kernel.org/stable/c/61e25f664dc2a08299e07d84c85776abc2350f75","https://git.kernel.org/stable/c/6678dde265708003c2b42551af4a2e3cb05decd5","https://git.kernel.org/stable/c/82cbdb4c1ebb5ea7d7bd45c18d3483b5bd32ebc1","https://git.kernel.org/stable/c/ac8a2e0d287ebf35e5d7e51e260b4e146648ba4a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-53050","score":0.00104,"percentile":0.01025,"date":"2026-10-25"},"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."]}