{"apiVersion":"1.0","identifier":"CVE-2026-99073","description":"In the Linux kernel, the following vulnerability has been resolved: ipv4: stop exception dump when nexthop group shrinks Commit 4ce5dc9316de (-inet: switch inet_dump_fib() to RCU protection-) allowed IPv4 FIB dumps to run concurrently with nexthop replacement. fib_dump_info_fnhe() uses fib_info_num_path() as the loop bound, then fib_info_nhc() independently reloads nh->nh_grp. If RTM_NEWNEXTHOP replaces a group with fewer paths between those loads, fib_info_nhc() returns NULL and the dump dereferences it through nhc_flags. Stop the walk when the indexed path is absent. Nexthop groups are dense, so the current snapshot has no later path.","publishedAt":"2026-10-23T13:17:31","lastModifiedAt":"2026-10-23T13:17:31","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-99073","cvssScore":null,"cvssVector":null,"epssProbability":0.00157,"riskScore":null,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-99073","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-99073","en":"https://www.redsauce.net/en/cves/CVE-2026-99073","fr":"https://www.redsauce.net/fr/cves/CVE-2026-99073","pt":"https://www.redsauce.net/pt/cves/CVE-2026-99073","de":"https://www.redsauce.net/de/cves/CVE-2026-99073","sk":"https://www.redsauce.net/sk/cves/CVE-2026-99073","el":"https://www.redsauce.net/el/cves/CVE-2026-99073"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-99073"}}