{
  "threat_severity" : "Low",
  "public_date" : "2024-05-19T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: mptcp: prevent BPF accessing lowat from a subflow socket.",
    "id" : "2281679",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2281679"
  },
  "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"
  },
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nmptcp: prevent BPF accessing lowat from a subflow socket.\nAlexei reported the following splat:\nWARNING: CPU: 32 PID: 3276 at net/mptcp/subflow.c:1430 subflow_data_ready+0x147/0x1c0\nModules linked in: dummy bpf_testmod(O) [last unloaded: bpf_test_no_cfi(O)]\nCPU: 32 PID: 3276 Comm: test_progs Tainted: GO       6.8.0-12873-g2c43c33bfd23\nCall Trace:\n<TASK>\nmptcp_set_rcvlowat+0x79/0x1d0\nsk_setsockopt+0x6c0/0x1540\n__bpf_setsockopt+0x6f/0x90\nbpf_sock_ops_setsockopt+0x3c/0x90\nbpf_prog_509ce5db2c7f9981_bpf_test_sockopt_int+0xb4/0x11b\nbpf_prog_dce07e362d941d2b_bpf_test_socket_sockopt+0x12b/0x132\nbpf_prog_348c9b5faaf10092_skops_sockopt+0x954/0xe86\n__cgroup_bpf_run_filter_sock_ops+0xbc/0x250\ntcp_connect+0x879/0x1160\ntcp_v6_connect+0x50c/0x870\nmptcp_connect+0x129/0x280\n__inet_stream_connect+0xce/0x370\ninet_stream_connect+0x36/0x50\nbpf_trampoline_6442491565+0x49/0xef\ninet_stream_connect+0x5/0x50\n__sys_connect+0x63/0x90\n__x64_sys_connect+0x14/0x20\nThe root cause of the issue is that bpf allows accessing mptcp-level\nproto_ops from a tcp subflow scope.\nFix the issue detecting the problematic call and preventing any action." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-11-12T00:00:00Z",
    "advisory" : "RHSA-2024:9315",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-503.11.1.el9_5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-11-12T00:00:00Z",
    "advisory" : "RHSA-2024:9315",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-503.11.1.el9_5"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2024-35894\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35894\nhttps://lore.kernel.org/linux-cve-announce/2024051949-CVE-2024-35894-fd19@gregkh/T" ],
  "name" : "CVE-2024-35894",
  "csaw" : false
}