{"cve":"CVE-2023-53681","nvd":{"published":"2025-10-07T16:15:52.287","modified":"2026-10-28T20:10:00.163","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: Fix __bch_btree_node_alloc to make the failure behavior consistent\n\nIn some specific situations, the return value of __bch_btree_node_alloc\nmay be NULL. This may lead to a potential NULL pointer dereference in\ncaller function like a calling chain :\nbtree_split->bch_btree_node_alloc->__bch_btree_node_alloc.\n\nFix it by initializing the return value in __bch_btree_node_alloc.","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-476"],"references":["https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4","https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4","https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9f","https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4","https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-28T20:25:46.008810417+00:00"},"epss":{"cve":"CVE-2023-53681","score":0.00149,"percentile":0.04019,"date":"2026-10-28"},"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."]}