{"cve":"CVE-2026-99073","nvd":{"published":"2026-10-23T13:17:31.260","modified":"2026-10-23T13:17:31.260","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: stop exception dump when nexthop group shrinks\n\nCommit 4ce5dc9316de (\"inet: switch inet_dump_fib() to RCU\nprotection\") allowed IPv4 FIB dumps to run concurrently with nexthop\nreplacement.\n\nfib_dump_info_fnhe() uses fib_info_num_path() as the loop bound,\nthen fib_info_nhc() independently reloads nh->nh_grp. If\nRTM_NEWNEXTHOP replaces a group with fewer paths between those loads,\nfib_info_nhc() returns NULL and the dump dereferences it through\nnhc_flags.\n\nStop the walk when the indexed path is absent. Nexthop groups are\ndense, so the current snapshot has no later path.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/21cba134c30c17ae55f468b5809336437df5d7e6","https://git.kernel.org/stable/c/4f4afc07dcb2edd4f9afa36595373f8cdb9b58c2","https://git.kernel.org/stable/c/b9a30bb7b831e8c5a47fadbdf1760918aaf009cc","https://git.kernel.org/stable/c/f91e472821e32f58b03eb631e20a67157e2b928b"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:28.036610720+00:00"},"epss":{"cve":"CVE-2026-99073","score":0.00157,"percentile":0.0477,"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."]}