{
  "threat_severity" : "Moderate",
  "public_date" : "2025-05-01T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header",
    "id" : "2363458",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2363458"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-908",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\ntipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header\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.\nsyzbot reported a call trace because of it:\nBUG: KMSAN: uninit-value in ...\ntipc_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\ntipc_nl_compat_dumpit+0x991/0xb50 net/tipc/netlink_compat.c:321\ntipc_nl_compat_recv+0xb6e/0x1640 net/tipc/netlink_compat.c:1324\ngenl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]\ngenl_family_rcv_msg net/netlink/genetlink.c:775 [inline]\ngenl_rcv_msg+0x103f/0x1260 net/netlink/genetlink.c:792\nnetlink_rcv_skb+0x3a5/0x6c0 net/netlink/af_netlink.c:2501\ngenl_rcv+0x3c/0x50 net/netlink/genetlink.c:803\nnetlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\nnetlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345\nnetlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921\nsock_sendmsg_nosec net/socket.c:714 [inline]\nsock_sendmsg net/socket.c:734 [inline]", "A flaw was found in the tipc module in the Linux kernel. An uninitialized value issue can be triggered due to a missing type cast when comparing the length of data with the size of an object. This issue can potentially cause system instability and result in a denial of service." ],
  "statement" : "This issue has been fixed in Red Hat Enterprise Linux 8.9 and 9.2 via RHSA-2023:7077 [1] and RHSA-2023:2458 [2], respectively.\n[1]. https://access.redhat.com/errata/RHSA-2023:7077\n[2]. https://access.redhat.com/errata/RHSA-2023:2458",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-11-14T00:00:00Z",
    "advisory" : "RHSA-2023:7077",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-513.5.1.el8_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-05-09T00:00:00Z",
    "advisory" : "RHSA-2023:2458",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-284.11.1.el9_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-05-09T00:00:00Z",
    "advisory" : "RHSA-2023:2458",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-284.11.1.el9_2"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-49862\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49862\nhttps://lore.kernel.org/linux-cve-announce/2025050147-CVE-2022-49862-04f2@gregkh/T" ],
  "name" : "CVE-2022-49862",
  "csaw" : false
}