{"id":"CVE-2022-49862","state":"PUBLISHED","title":"tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix the msg->req 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]","publishedAt":"2025-05-01T14:10:15.742Z","updatedAt":"2026-05-23T15:23:02.760Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4c559fb7e111077b56f62ccf833a52d8169cde19","status":"affected","lessThan":"082707d3df191bf5bb8801d43e4ce3dea39ca173","versionType":"git"},{"version":"2aae1723dea1235ffef183daf0694805297424f6","status":"affected","lessThan":"a0ead1d648df9c456baec832b494513ef405949a","versionType":"git"},{"version":"2d5fc1d492d194aa2986c5a9d8a48a60e9143a72","status":"affected","lessThan":"55a253a6753a603e80b95932ca971ba514aa6ce7","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"36769b9477491a7af6635863bd950309c1e1b96c","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"f31dd158580940938f77514b87337a777520185a","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"301caa06091af4d5cf056ac8249cbda4e6029c6a","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"6cee2c60bd168279852ac7dbe54c2b70d1028644","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"1c075b192fe41030457cd4a5f7dea730412bca40","versionType":"git"},{"version":"c25352f9ad5dffb4de95069e67891e2aa2e99e50","status":"affected","versionType":"git"},{"version":"5486e8d46560ca2b4d86cbd7d3a66d9913b2ac65","status":"affected","versionType":"git"},{"version":"4.9.152","status":"affected","lessThan":"4.9.334","versionType":"semver"},{"version":"4.14.95","status":"affected","lessThan":"4.14.300","versionType":"semver"},{"version":"4.19.17","status":"affected","lessThan":"4.19.267","versionType":"semver"},{"version":"4.4.172","status":"affected","lessThan":"4.5","versionType":"semver"},{"version":"4.20.4","status":"affected","lessThan":"4.21","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tipc/netlink_compat.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"4.9.334","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.300","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.267","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.225","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.155","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.79","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.9","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tipc/netlink_compat.c"]}],"references":["https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173","https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a","https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7","https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c","https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a","https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a","https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644","https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40"],"weaknesses":["CWE-908"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49862.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49862","state":"PUBLISHED","datePublished":"2025-05-01T14:10:15.742Z","dateUpdated":"2026-05-23T15:23:02.760Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-05-01T14:05:17.236Z"},"containers":{"cna":{"title":"tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix the msg->req 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]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4c559fb7e111077b56f62ccf833a52d8169cde19","status":"affected","lessThan":"082707d3df191bf5bb8801d43e4ce3dea39ca173","versionType":"git"},{"version":"2aae1723dea1235ffef183daf0694805297424f6","status":"affected","lessThan":"a0ead1d648df9c456baec832b494513ef405949a","versionType":"git"},{"version":"2d5fc1d492d194aa2986c5a9d8a48a60e9143a72","status":"affected","lessThan":"55a253a6753a603e80b95932ca971ba514aa6ce7","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"36769b9477491a7af6635863bd950309c1e1b96c","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"f31dd158580940938f77514b87337a777520185a","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"301caa06091af4d5cf056ac8249cbda4e6029c6a","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"6cee2c60bd168279852ac7dbe54c2b70d1028644","versionType":"git"},{"version":"974cb0e3e7c963ced06c4e32c5b2884173fa5e01","status":"affected","lessThan":"1c075b192fe41030457cd4a5f7dea730412bca40","versionType":"git"},{"version":"c25352f9ad5dffb4de95069e67891e2aa2e99e50","status":"affected","versionType":"git"},{"version":"5486e8d46560ca2b4d86cbd7d3a66d9913b2ac65","status":"affected","versionType":"git"},{"version":"4.9.152","status":"affected","lessThan":"4.9.334","versionType":"semver"},{"version":"4.14.95","status":"affected","lessThan":"4.14.300","versionType":"semver"},{"version":"4.19.17","status":"affected","lessThan":"4.19.267","versionType":"semver"},{"version":"4.4.172","status":"affected","lessThan":"4.5","versionType":"semver"},{"version":"4.20.4","status":"affected","lessThan":"4.21","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tipc/netlink_compat.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"4.9.334","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.300","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.267","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.225","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.155","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.79","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.9","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tipc/netlink_compat.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173"},{"url":"https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a"},{"url":"https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7"},{"url":"https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c"},{"url":"https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a"},{"url":"https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a"},{"url":"https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644"},{"url":"https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:23:02.760Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.152","versionEndExcluding":"4.9.334"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.95","versionEndExcluding":"4.14.300"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.17","versionEndExcluding":"4.19.267"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.4.225"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.10.155"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.15.79"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.0.9"},{"vulnerable":true,"criter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ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T16:11:41.836355Z","id":"CVE-2022-49862","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-908","type":"CWE","lang":"en","description":"CWE-908 Use of Uninitialized Resource"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T16:11:44.347Z"}}]}}}