{"cve":"CVE-2025-71291","nvd":{"published":"2026-05-06T12:16:28.330","modified":"2026-10-14T13:10:00.187","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()\n\nIn the function bcm_vk_read(), the pointer entry is checked, indicating\nthat it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the\nfollowing code may cause null-pointer dereferences:\n\n  struct vk_msg_blk tmp_msg = entry->to_h_msg[0];\n  set_msg_id(&tmp_msg, entry->usr_msg_id);\n  tmp_msg.size = entry->to_h_blks - 1;\n\nTo prevent these possible null-pointer dereferences, copy to_h_msg,\nusr_msg_id, and to_h_blks from iter into temporary variables, and return\nthese temporary variables to the application instead of accessing them\nthrough a potentially NULL entry.","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/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd","https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69","https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22","https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb","https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2025-71291","score":0.00123,"percentile":0.02009,"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."]}