{"id":"CVE-2022-49862","summary":"tipc: fix the msg-\u003ereq tlv len check in tipc_nl_compat_name_table_dump_header","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix the msg-\u003ereq tlv len check in tipc_nl_compat_name_table_dump_header\n\nThis is a follow-up for commit 974cb0e3e7c9 (\"tipc: fix uninit-value\nin tipc_nl_compat_name_table_dump\") where it should have type casted\nsizeof(..) to int to work when TLV_GET_DATA_LEN() returns a negative\nvalue.\n\nsyzbot reported a call trace because of it:\n\n  BUG: KMSAN: uninit-value in ...\n   tipc_nl_compat_name_table_dump+0x841/0xea0 net/tipc/netlink_compat.c:934\n   __tipc_nl_compat_dumpit+0xab2/0x1320 net/tipc/netlink_compat.c:238\n   tipc_nl_compat_dumpit+0x991/0xb50 net/tipc/netlink_compat.c:321\n   tipc_nl_compat_recv+0xb6e/0x1640 net/tipc/netlink_compat.c:1324\n   genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]\n   genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]\n   genl_rcv_msg+0x103f/0x1260 net/netlink/genetlink.c:792\n   netlink_rcv_skb+0x3a5/0x6c0 net/netlink/af_netlink.c:2501\n   genl_rcv+0x3c/0x50 net/netlink/genetlink.c:803\n   netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n   netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345\n   netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921\n   sock_sendmsg_nosec net/socket.c:714 [inline]\n   sock_sendmsg net/socket.c:734 [inline]","modified":"2026-04-02T08:27:59.830327Z","published":"2025-05-01T14:10:15.742Z","related":["SUSE-SU-2025:01983-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49862.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40"},{"type":"WEB","url":"https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49862.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49862"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4c559fb7e111077b56f62ccf833a52d8169cde19"},{"fixed":"082707d3df191bf5bb8801d43e4ce3dea39ca173"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2aae1723dea1235ffef183daf0694805297424f6"},{"fixed":"a0ead1d648df9c456baec832b494513ef405949a"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2d5fc1d492d194aa2986c5a9d8a48a60e9143a72"},{"fixed":"55a253a6753a603e80b95932ca971ba514aa6ce7"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01"},{"fixed":"36769b9477491a7af6635863bd950309c1e1b96c"},{"fixed":"f31dd158580940938f77514b87337a777520185a"},{"fixed":"301caa06091af4d5cf056ac8249cbda4e6029c6a"},{"fixed":"6cee2c60bd168279852ac7dbe54c2b70d1028644"},{"fixed":"1c075b192fe41030457cd4a5f7dea730412bca40"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"c25352f9ad5dffb4de95069e67891e2aa2e99e50"},{"last_affected":"5486e8d46560ca2b4d86cbd7d3a66d9913b2ac65"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49862.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}