{"id":"AZL-93461","summary":"CVE-2026-64411 affecting package kernel for versions less than 6.6.145.2-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ebtables: terminate table name before find_table_lock()\n\nupdate_counters() and compat_update_counters() forward a user-supplied\n32-byte table name to find_table_lock() without NUL-terminating it. On a\nlookup miss, find_inlist_lock() calls try_then_request_module(..., \"%s%s\",\n\"ebtable_\", name), and vsnprintf() reads past the name field and the\nstack object until it hits a zero byte.\n\n  BUG: KASAN: stack-out-of-bounds in string (lib/vsprintf.c:648 lib/vsprintf.c:730)\n  Read of size 1 at addr ffff8880119dfb20 by task exploit/147\n  Call Trace:\n  ...\n   string (lib/vsprintf.c:648 lib/vsprintf.c:730)\n   vsnprintf (lib/vsprintf.c:2945)\n   __request_module (kernel/module/kmod.c:150)\n   do_update_counters.isra.0 (net/bridge/netfilter/ebtables.c:371 net/bridge/netfilter/ebtables.c:380)\n   update_counters (net/bridge/netfilter/ebtables.c:1440)\n   do_ebt_set_ctl (net/bridge/netfilter/ebtables.c:2573)\n   nf_setsockopt (net/netfilter/nf_sockopt.c:101)\n   ip_setsockopt (net/ipv4/ip_sockglue.c:1424)\n   raw_setsockopt (net/ipv4/raw.c:847)\n   __sys_setsockopt (net/socket.c:2393)\n  ...\n\ncompat_do_replace() shares the same unterminated name via\ncompat_copy_ebt_replace_from_user(); terminate it there too so all\nfind_table_lock() callers behave alike. The other callers already\nterminate the name after the copy.","modified":"2026-08-28T17:47:48.407108961Z","published":"2026-07-25T10:17:24Z","upstream":["CVE-2026-64411"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64411"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.145.2-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-93461.json"}}],"schema_version":"1.9.0"}