{"cve":"CVE-2023-53450","nvd":{"published":"2025-10-01T12:15:41.503","modified":"2026-06-17T06:45:22.277","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: remove a BUG_ON in ext4_mb_release_group_pa()\n\nIf a malicious fuzzer overwrites the ext4 superblock while it is\nmounted such that the s_first_data_block is set to a very large\nnumber, the calculation of the block group can underflow, and trigger\na BUG_ON check.  Change this to be an ext4_warning so that we don't\ncrash the kernel.","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":["CWE-617"],"references":["https://git.kernel.org/stable/c/185062a21976fbc38f2efd296951b02c4500cf65","https://git.kernel.org/stable/c/463808f237cf73e98a1a45ff7460c2406a150a0b","https://git.kernel.org/stable/c/53c14e7cc2257191ba15425c15638fc4f8abb92b","https://git.kernel.org/stable/c/978e5e9111af18741449b81fefd531a622dd969a","https://git.kernel.org/stable/c/b0fc279de4bf17e1710bb7e83906538ff8f11111"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2023-53450","score":0.00163,"percentile":0.05508,"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."]}