{
  "cveId": "CVE-2024-49926",
  "url": "https://patchblox.com/security/cve/CVE-2024-49926",
  "summary": "CVE-2024-49926 is fixed in 22 products on 1 platform, first by DEBIAN-CVE-2024-49926, released October 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()  For kernels built with CONFIG_FORCE_NR_CPUS=y, the nr_cpu_ids is defined as NR_CPUS instead of the number of possible cpus, this will cause the following system panic:  smpboot: Allowing 4 CPUs, 0 hotplug CPUs ... setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1 ... BUG: unable to handle page fault for address: ffffffff9911c8c8 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: G W 6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6 RIP: 0010:rcu_tasks_need_gpcb\u002B0x25d/0x2c0 RSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082 CR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0 Call Trace: \u003CTASK\u003E ? __die\u002B0x23/0x80 ? page_fault_oops\u002B0xa4/0x180 ? exc_page_fault\u002B0x152/0x180 ? asm_exc_page_fault\u002B0x26/0x40 ? rcu_tasks_need_gpcb\u002B0x25d/0x2c0 ? __pfx_rcu_tasks_kthread\u002B0x40/0x40 rcu_tasks_one_gp\u002B0x69/0x180 rcu_tasks_kthread\u002B0x94/0xc0 kthread\u002B0xe8/0x140 ? __pfx_kthread\u002B0x40/0x40 ret_from_fork\u002B0x34/0x80 ? __pfx_kthread\u002B0x40/0x40 ret_from_fork_asm\u002B0x1b/0x80 \u003C/TASK\u003E  Considering that there may be holes in the CPU numbers, use the maximum possible cpu number, instead of nr_cpu_ids, for configuring enqueue and dequeue limits.  [ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ]",
  "published": "2024-10-21T18:15:14Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00235,
  "epssPercentile": 0.14492,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49926",
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.124-134.200",
      "release": "amzn 2023",
      "fixedVersion": "1.0-0.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.11.4-1",
      "fix": "DEBIAN-CVE-2024-49926",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-49926",
      "released": "2024-10-21T18:15:14Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.11.4-1",
      "fix": "DEBIAN-CVE-2024-49926",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-49926",
      "released": "2024-10-21T18:15:14Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.124-134.200.amzn2023",
      "fix": "ALAS2023-2025-809",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-809",
      "released": "2025-01-21T23:11:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}