{"cve":"CVE-2024-53143","nvd":{"published":"2024-12-07T07:15:03.780","modified":"2026-06-17T08:08:24.497","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfsnotify: Fix ordering of iput() and watched_objects decrement\n\nEnsure the superblock is kept alive until we're done with iput().\nHolding a reference to an inode is not allowed unless we ensure the\nsuperblock stays alive, which fsnotify does by keeping the\nwatched_objects count elevated, so iput() must happen before the\nwatched_objects decrement.\nThis can lead to a UAF of something like sb->s_fs_info in tmpfs, but the\nUAF is hard to hit because race orderings that oops are more likely, thanks\nto the CHECK_DATA_CORRUPTION() block in generic_shutdown_super().\n\nAlso, ensure that fsnotify_put_sb_watched_objects() doesn't call\nfsnotify_sb_watched_objects() on a superblock that may have already been\nfreed, which would cause a UAF read of sb->s_fsnotify_info.","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-416"],"references":["https://git.kernel.org/stable/c/21d1b618b6b9da46c5116c640ac4b1cc8d40d63a","https://git.kernel.org/stable/c/45a8f8232a495221ed058191629f5c628f21601a","https://git.kernel.org/stable/c/83af1cfa10d9aafdabd06b3655e07727f373b434","https://project-zero.issues.chromium.org/issues/379667898"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:57:36.180738747+00:00"},"epss":{"cve":"CVE-2024-53143","score":0.00213,"percentile":0.11635,"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."]}