{
  "threat_severity" : "Moderate",
  "public_date" : "2025-12-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Linux kernel: Hard lockup in lpfc driver leads to Denial of Service",
    "id" : "2425198",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2425198"
  },
  "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-413",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nscsi: lpfc: Fix hard lockup when reading the rx_monitor from debugfs\nDuring I/O and simultaneous cat of /sys/kernel/debug/lpfc/fnX/rx_monitor, a\nhard lockup similar to the call trace below may occur.\nThe spin_lock_bh in lpfc_rx_monitor_report is not protecting from timer\ninterrupts as expected, so change the strength of the spin lock to _irq.\nKernel panic - not syncing: Hard LOCKUP\nCPU: 3 PID: 110402 Comm: cat Kdump: loaded\nexception RIP: native_queued_spin_lock_slowpath+91\n[IRQ stack]\nnative_queued_spin_lock_slowpath at ffffffffb814e30b\n_raw_spin_lock at ffffffffb89a667a\nlpfc_rx_monitor_record at ffffffffc0a73a36 [lpfc]\nlpfc_cmf_timer at ffffffffc0abbc67 [lpfc]\n__hrtimer_run_queues at ffffffffb8184250\nhrtimer_interrupt at ffffffffb8184ab0\nsmp_apic_timer_interrupt at ffffffffb8a026ba\napic_timer_interrupt at ffffffffb8a01c4f\n[End of IRQ stack]\napic_timer_interrupt at ffffffffb8a01c4f\nlpfc_rx_monitor_report at ffffffffc0a73c80 [lpfc]\nlpfc_rx_monitor_read at ffffffffc0addde1 [lpfc]\nfull_proxy_read at ffffffffb83e7fc3\nvfs_read at ffffffffb833fe71\nksys_read at ffffffffb83402af\ndo_syscall_64 at ffffffffb800430b\nentry_SYSCALL_64_after_hwframe at ffffffffb8a000ad", "A flaw was found in the Linux kernel. A local user could trigger a hard lockup by concurrently reading the `rx_monitor` from `debugfs` during I/O operations in the `lpfc` driver. This concurrency issue, caused by insufficient spin lock protection, leads to a system crash and results in a Denial of Service (DoS)." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-05-16T00:00:00Z",
    "advisory" : "RHSA-2023:2951",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-477.10.1.el8_8"
  }, {
    "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" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "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-2022-50744\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50744\nhttps://lore.kernel.org/linux-cve-announce/2025122449-CVE-2022-50744-bc80@gregkh/T" ],
  "name" : "CVE-2022-50744",
  "csaw" : false
}