{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-40906",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-40906"
  ],
  "published": "2024-07-12T12:21:19Z",
  "summary": "net/mlx5: Always stop health timer during driver removal",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Always stop health timer during driver removal\n\nCurrently, if teardown_hca fails to execute during driver removal, mlx5\ndoes not stop the health timer. Afterwards, mlx5 continue with driver\nteardown. This may lead to a UAF bug, which results in page fault\nOops[1], since the health timer invokes after resources were freed.\n\nHence, stop the health monitor even if teardown_hca fails.\n\n[1]\nmlx5_core 0000:18:00.0: E-Switch: Unload vfs: mode(LEGACY), nvfs(0), necvfs(0), active vports(0)\nmlx5_core 0000:18:00.0: E-Switch: Disable: mode(LEGACY), nvfs(0), necvfs(0), active vports(0)\nmlx5_core 0000:18:00.0: E-Switch: Disable: mode(LEGACY), nvfs(0), necvfs(0), active vports(0)\nmlx5_core 0000:18:00.0: E-Switch: cleanup\nmlx5_core 0000:18:00.0: wait_func:1155:(pid 1967079): TEARDOWN_HCA(0x103) timeout. Will cause a leak of a command resource\nmlx5_core 0000:18:00.0: mlx5_function_close:1288:(pid 1967079): tear_down_hca failed, skip cleanup\nBUG: unable to handle page fault for address: ffffa26487064230\nPGD 100c00067 P4D 100c00067 PUD 100e5a067 PMD 105ed7067 PTE 0\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 0 PID: 0 Comm: swapper/0 Tainted: G           OE     -------  ---  6.7.0-68.fc38.x86_64 #1\nHardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0013.121520200651 12/15/2020\nRIP: 0010:ioread32be+0x34/0x60\nRSP: 0018:ffffa26480003e58 EFLAGS: 00010292\nRAX: ffffa26487064200 RBX: ffff9042d08161a0 RCX: ffff904c108222c0\nRDX: 000000010bbf1b80 RSI: ffffffffc055ddb0 RDI: ffffa26487064230\nRBP: ffff9042d08161a0 R08: 0000000000000022 R09: ffff904c108222e8\nR10: 0000000000000004 R11: 0000000000000441 R12: ffffffffc055ddb0\nR13: ffffa26487064200 R14: ffffa26480003f00 R15: ffff904c108222c0\nFS:  0000000000000000(0000) GS:ffff904c10800000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: ffffa26487064230 CR3: 00000002c4420006 CR4: 00000000007706f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n <IRQ>\n ? __die+0x23/0x70\n ? page_fault_oops+0x171/0x4e0\n ? exc_page_fault+0x175/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n ? ioread32be+0x34/0x60\n mlx5_health_check_fatal_sensors+0x20/0x100 [mlx5_core]\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n poll_health+0x42/0x230 [mlx5_core]\n ? __next_timer_interrupt+0xbc/0x110\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n call_timer_fn+0x21/0x130\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n __run_timers+0x222/0x2c0\n run_timer_softirq+0x1d/0x40\n __do_softirq+0xc9/0x2c8\n __irq_exit_rcu+0xa6/0xc0\n sysvec_apic_timer_interrupt+0x72/0x90\n </IRQ>\n <TASK>\n asm_sysvec_apic_timer_interrupt+0x1a/0x20\nRIP: 0010:cpuidle_enter_state+0xcc/0x440\n ? cpuidle_enter_state+0xbd/0x440\n cpuidle_enter+0x2d/0x40\n do_idle+0x20d/0x270\n cpu_startup_entry+0x2a/0x30\n rest_init+0xd0/0xd0\n arch_call_rest_init+0xe/0x30\n start_kernel+0x709/0xa90\n x86_64_start_reservations+0x18/0x30\n x86_64_start_kernel+0x96/0xa0\n secondary_startup_64_no_verify+0x18f/0x19b\n---[ end trace 0000000000000000 ]---",
  "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": "6.1.95",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-40906"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e7d4485d47839f4d1284592ae242c4e65b2810a9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6ccada6ffb42e0ac75e3db06d41baf5a7f483f8a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e6777ae0bf6fd5bc626bb051c8c93e3c8198a3f8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c8b3f38d2dae0397944814d691a419c451f9906f"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}