{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"ea18594da69a09f68491da57f9fa09f003efbbc7","status":"affected","version":"676457fe5ad19517a8b21d1c3f4d23512118f6a3","versionType":"git"},{"lessThan":"2930ee1a166df0e12fe9fec4b79cc3dc9634ae45","status":"affected","version":"88e2ca3080947fe22eb520c1f8231e79a105d011","versionType":"git"},{"lessThan":"b39fda51c32dd879451e0119881f31493bf83283","status":"affected","version":"88e2ca3080947fe22eb520c1f8231e79a105d011","versionType":"git"},{"lessThan":"4e43e64d0f1332fcc503babad4dc31aead7131ca","status":"affected","version":"88e2ca3080947fe22eb520c1f8231e79a105d011","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"5.13"},{"lessThan":"5.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.53","versionType":"semver"},{"lessThanOrEqual":"5.18.*","status":"unaffected","version":"5.18.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"5.19","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49662","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix lockdep splat in in6_dump_addrs()\n\nAs reported by syzbot, we should not use rcu_dereference()\nwhen rcu_read_lock() is not held.\n\nWARNING: suspicious RCU usage\n5.19.0-rc2-syzkaller #0 Not tainted\n\nnet/ipv6/addrconf.c:5175 suspicious rcu_dereference_check() usage!\n\nother info that might help us debug this:\n\nrcu_scheduler_active = 2, debug_locks = 1\n1 lock held by syz-executor326/3617:\n #0: ffffffff8d5848e8 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0xae/0xc20 net/netlink/af_netlink.c:2223\n\nstack backtrace:\nCPU: 0 PID: 3617 Comm: syz-executor326 Not tainted 5.19.0-rc2-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n in6_dump_addrs+0x12d1/0x1790 net/ipv6/addrconf.c:5175\n inet6_dump_addr+0x9c1/0xb50 net/ipv6/addrconf.c:5300\n netlink_dump+0x541/0xc20 net/netlink/af_netlink.c:2275\n __netlink_dump_start+0x647/0x900 net/netlink/af_netlink.c:2380\n netlink_dump_start include/linux/netlink.h:245 [inline]\n rtnetlink_rcv_msg+0x73e/0xc90 net/core/rtnetlink.c:6046\n netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg+0xcf/0x120 net/socket.c:734\n ____sys_sendmsg+0x6eb/0x810 net/socket.c:2492\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2546\n __sys_sendmsg net/socket.c:2575 [inline]\n __do_sys_sendmsg net/socket.c:2584 [inline]\n __se_sys_sendmsg net/socket.c:2582 [inline]\n __x64_sys_sendmsg+0x132/0x220 net/socket.c:2582\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0","epss":{"date":"2026-11-05","percentile":0.20081,"score":0.00275},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908181836,"publishedAt":1740536638824,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ea18594da69a09f68491da57f9fa09f003efbbc7"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/2930ee1a166df0e12fe9fec4b79cc3dc9634ae45"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/b39fda51c32dd879451e0119881f31493bf83283"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/4e43e64d0f1332fcc503babad4dc31aead7131ca"}],"remediation":[],"revision":"c66619bf5cb6fd5ed4af1c561b7855ca9bb785fd57d6ea48d01bff179c37784a","sources":[{"modifiedAt":1793908181836,"name":"CNA: Linux","retrievedAt":1793909385956,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49662"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909408507,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49662"}],"ssvc":{"assessedAt":1793908003720,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"ipv6: fix lockdep splat in in6_dump_addrs()","updatedAt":1793909408507}