{
  "threat_severity" : "Low",
  "public_date" : "2024-11-19T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: mptcp: init: protect sched with rcu_read_lock",
    "id" : "2327369",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2327369"
  },
  "cvss3" : {
    "cvss3_base_score" : "3.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-667",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nmptcp: init: protect sched with rcu_read_lock\nEnabling CONFIG_PROVE_RCU_LIST with its dependence CONFIG_RCU_EXPERT\ncreates this splat when an MPTCP socket is created:\n=============================\nWARNING: suspicious RCU usage\n6.12.0-rc2+ #11 Not tainted\n-----------------------------\nnet/mptcp/sched.c:44 RCU-list traversed in non-reader section!!\nother info that might help us debug this:\nrcu_scheduler_active = 2, debug_locks = 1\nno locks held by mptcp_connect/176.\nstack backtrace:\nCPU: 0 UID: 0 PID: 176 Comm: mptcp_connect Not tainted 6.12.0-rc2+ #11\nHardware name: Bochs Bochs, BIOS Bochs 01/01/2011\nCall Trace:\n<TASK>\ndump_stack_lvl (lib/dump_stack.c:123)\nlockdep_rcu_suspicious (kernel/locking/lockdep.c:6822)\nmptcp_sched_find (net/mptcp/sched.c:44 (discriminator 7))\nmptcp_init_sock (net/mptcp/protocol.c:2867 (discriminator 1))\n? sock_init_data_uid (arch/x86/include/asm/atomic.h:28)\ninet_create.part.0.constprop.0 (net/ipv4/af_inet.c:386)\n? __sock_create (include/linux/rcupdate.h:347 (discriminator 1))\n__sock_create (net/socket.c:1576)\n__sys_socket (net/socket.c:1671)\n? __pfx___sys_socket (net/socket.c:1712)\n? do_user_addr_fault (arch/x86/mm/fault.c:1419 (discriminator 1))\n__x64_sys_socket (net/socket.c:1728)\ndo_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1))\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\nThat's because when the socket is initialised, rcu_read_lock() is not\nused despite the explicit comment written above the declaration of\nmptcp_sched_find() in sched.c. Adding the missing lock/unlock avoids the\nwarning." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-05-13T00:00:00Z",
    "advisory" : "RHSA-2025:6966",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-570.12.1.el9_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-05-13T00:00:00Z",
    "advisory" : "RHSA-2025:6966",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-570.12.1.el9_6"
  } ],
  "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-2024-53047\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-53047\nhttps://lore.kernel.org/linux-cve-announce/2024111926-CVE-2024-53047-8214@gregkh/T" ],
  "name" : "CVE-2024-53047",
  "csaw" : false
}