{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-53687",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-53687"
  ],
  "published": "2025-01-11T12:31:26Z",
  "summary": "riscv: Fix IPIs usage in kfence_protect_page()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: Fix IPIs usage in kfence_protect_page()\n\nflush_tlb_kernel_range() may use IPIs to flush the TLBs of all the\ncores, which triggers the following warning when the irqs are disabled:\n\n[    3.455330] WARNING: CPU: 1 PID: 0 at kernel/smp.c:815 smp_call_function_many_cond+0x452/0x520\n[    3.456647] Modules linked in:\n[    3.457218] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc7-00010-g91d3de7240b8 #1\n[    3.457416] Hardware name: QEMU QEMU Virtual Machine, BIOS\n[    3.457633] epc : smp_call_function_many_cond+0x452/0x520\n[    3.457736]  ra : on_each_cpu_cond_mask+0x1e/0x30\n[    3.457786] epc : ffffffff800b669a ra : ffffffff800b67c2 sp : ff2000000000bb50\n[    3.457824]  gp : ffffffff815212b8 tp : ff6000008014f080 t0 : 000000000000003f\n[    3.457859]  t1 : ffffffff815221e0 t2 : 000000000000000f s0 : ff2000000000bc10\n[    3.457920]  s1 : 0000000000000040 a0 : ffffffff815221e0 a1 : 0000000000000001\n[    3.457953]  a2 : 0000000000010000 a3 : 0000000000000003 a4 : 0000000000000000\n[    3.458006]  a5 : 0000000000000000 a6 : ffffffffffffffff a7 : 0000000000000000\n[    3.458042]  s2 : ffffffff815223be s3 : 00fffffffffff000 s4 : ff600001ffe38fc0\n[    3.458076]  s5 : ff600001ff950d00 s6 : 0000000200000120 s7 : 0000000000000001\n[    3.458109]  s8 : 0000000000000001 s9 : ff60000080841ef0 s10: 0000000000000001\n[    3.458141]  s11: ffffffff81524812 t3 : 0000000000000001 t4 : ff60000080092bc0\n[    3.458172]  t5 : 0000000000000000 t6 : ff200000000236d0\n[    3.458203] status: 0000000200000100 badaddr: ffffffff800b669a cause: 0000000000000003\n[    3.458373] [<ffffffff800b669a>] smp_call_function_many_cond+0x452/0x520\n[    3.458593] [<ffffffff800b67c2>] on_each_cpu_cond_mask+0x1e/0x30\n[    3.458625] [<ffffffff8000e4ca>] __flush_tlb_range+0x118/0x1ca\n[    3.458656] [<ffffffff8000e6b2>] flush_tlb_kernel_range+0x1e/0x26\n[    3.458683] [<ffffffff801ea56a>] kfence_protect+0xc0/0xce\n[    3.458717] [<ffffffff801e9456>] kfence_guarded_free+0xc6/0x1c0\n[    3.458742] [<ffffffff801e9d6c>] __kfence_free+0x62/0xc6\n[    3.458764] [<ffffffff801c57d8>] kfree+0x106/0x32c\n[    3.458786] [<ffffffff80588cf2>] detach_buf_split+0x188/0x1a8\n[    3.458816] [<ffffffff8058708c>] virtqueue_get_buf_ctx+0xb6/0x1f6\n[    3.458839] [<ffffffff805871da>] virtqueue_get_buf+0xe/0x16\n[    3.458880] [<ffffffff80613d6a>] virtblk_done+0x5c/0xe2\n[    3.458908] [<ffffffff8058766e>] vring_interrupt+0x6a/0x74\n[    3.458930] [<ffffffff800747d8>] __handle_irq_event_percpu+0x7c/0xe2\n[    3.458956] [<ffffffff800748f0>] handle_irq_event+0x3c/0x86\n[    3.458978] [<ffffffff800786cc>] handle_simple_irq+0x9e/0xbe\n[    3.459004] [<ffffffff80073934>] generic_handle_domain_irq+0x1c/0x2a\n[    3.459027] [<ffffffff804bf87c>] imsic_handle_irq+0xba/0x120\n[    3.459056] [<ffffffff80073934>] generic_handle_domain_irq+0x1c/0x2a\n[    3.459080] [<ffffffff804bdb76>] riscv_intc_aia_irq+0x24/0x34\n[    3.459103] [<ffffffff809d0452>] handle_riscv_irq+0x2e/0x4c\n[    3.459133] [<ffffffff809d923e>] call_on_irq_stack+0x32/0x40\n\nSo only flush the local TLB and let the lazy kfence page fault handling\ndeal with the faults which could happen when a core has an old protected\npte version cached in its TLB. That leads to potential inaccuracies which\ncan be tolerated when using kfence.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-53687"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6f796a6a396d6f963f2cc8f5edd7dfba2cca097f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3abfc4130c4222099c69d023fed97f1180a8ad7b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b3431a8bb336cece8adc452437befa7d4534b2fd"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}