fkie_cve-2025-22086
Vulnerability from fkie_nvd
Published
2025-04-16 15:16
Modified
2025-04-17 20:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow When cur_qp isn't NULL, in order to avoid fetching the QP from the radix tree again we check if the next cqe QP is identical to the one we already have. The bug however is that we are checking if the QP is identical by checking the QP number inside the CQE against the QP number inside the mlx5_ib_qp, but that's wrong since the QP number from the CQE is from FW so it should be matched against mlx5_core_qp which is our FW QP number. Otherwise we could use the wrong QP when handling a CQE which could cause the kernel trace below. This issue is mainly noticeable over QPs 0 & 1, since for now they are the only QPs in our driver whereas the QP number inside mlx5_ib_qp doesn't match the QP number inside mlx5_core_qp. BUG: kernel NULL pointer dereference, address: 0000000000000012 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP CPU: 0 UID: 0 PID: 7927 Comm: kworker/u62:1 Not tainted 6.14.0-rc3+ #189 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 Workqueue: ib-comp-unb-wq ib_cq_poll_work [ib_core] RIP: 0010:mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib] Code: 03 00 00 8d 58 ff 21 cb 66 39 d3 74 39 48 c7 c7 3c 89 6e a0 0f b7 db e8 b7 d2 b3 e0 49 8b 86 60 03 00 00 48 c7 c7 4a 89 6e a0 <0f> b7 5c 98 02 e8 9f d2 b3 e0 41 0f b7 86 78 03 00 00 83 e8 01 21 RSP: 0018:ffff88810511bd60 EFLAGS: 00010046 RAX: 0000000000000010 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88885fa1b3c0 RDI: ffffffffa06e894a RBP: 00000000000000b0 R08: 0000000000000000 R09: ffff88810511bc10 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88810d593000 R13: ffff88810e579108 R14: ffff888105146000 R15: 00000000000000b0 FS: 0000000000000000(0000) GS:ffff88885fa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000012 CR3: 00000001077e6001 CR4: 0000000000370eb0 Call Trace: <TASK> ? __die+0x20/0x60 ? page_fault_oops+0x150/0x3e0 ? exc_page_fault+0x74/0x130 ? asm_exc_page_fault+0x22/0x30 ? mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib] __ib_process_cq+0x5a/0x150 [ib_core] ib_cq_poll_work+0x31/0x90 [ib_core] process_one_work+0x169/0x320 worker_thread+0x288/0x3a0 ? work_busy+0xb0/0xb0 kthread+0xd7/0x1f0 ? kthreads_online_cpu+0x130/0x130 ? kthreads_online_cpu+0x130/0x130 ret_from_fork+0x2d/0x50 ? kthreads_online_cpu+0x130/0x130 ret_from_fork_asm+0x11/0x20 </TASK>
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b97d77049856865ac5ce8ffbc6e716928310f7f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55c65a64aefa6267b964d90e9a4039cb68ec73a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5ed3b0cb3f827072e93b4c5b6e2b8106fd7cccbd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c51a6964b45b6d40027abd77e89cef30d26dc5a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/856d9e5d72dc44eca6d5a153581c58fbd84e92e1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cad677085274ecf9c7565b5bfc5d2e49acbf174c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d52636eb13ccba448a752964cc6fc49970912874
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc7139b7031d877acd73d7eff55670f22f48cd5e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0447ceb8a31d79bee7144f98f9a13f765531e1a
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow\n\nWhen cur_qp isn\u0027t NULL, in order to avoid fetching the QP from\nthe radix tree again we check if the next cqe QP is identical to\nthe one we already have.\n\nThe bug however is that we are checking if the QP is identical by\nchecking the QP number inside the CQE against the QP number inside the\nmlx5_ib_qp, but that\u0027s wrong since the QP number from the CQE is from\nFW so it should be matched against mlx5_core_qp which is our FW QP\nnumber.\n\nOtherwise we could use the wrong QP when handling a CQE which could\ncause the kernel trace below.\n\nThis issue is mainly noticeable over QPs 0 \u0026 1, since for now they are\nthe only QPs in our driver whereas the QP number inside mlx5_ib_qp\ndoesn\u0027t match the QP number inside mlx5_core_qp.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000012\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: Oops: 0000 [#1] SMP\n CPU: 0 UID: 0 PID: 7927 Comm: kworker/u62:1 Not tainted 6.14.0-rc3+ #189\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\n Workqueue: ib-comp-unb-wq ib_cq_poll_work [ib_core]\n RIP: 0010:mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib]\n Code: 03 00 00 8d 58 ff 21 cb 66 39 d3 74 39 48 c7 c7 3c 89 6e a0 0f b7 db e8 b7 d2 b3 e0 49 8b 86 60 03 00 00 48 c7 c7 4a 89 6e a0 \u003c0f\u003e b7 5c 98 02 e8 9f d2 b3 e0 41 0f b7 86 78 03 00 00 83 e8 01 21\n RSP: 0018:ffff88810511bd60 EFLAGS: 00010046\n RAX: 0000000000000010 RBX: 0000000000000000 RCX: 0000000000000000\n RDX: 0000000000000000 RSI: ffff88885fa1b3c0 RDI: ffffffffa06e894a\n RBP: 00000000000000b0 R08: 0000000000000000 R09: ffff88810511bc10\n R10: 0000000000000001 R11: 0000000000000001 R12: ffff88810d593000\n R13: ffff88810e579108 R14: ffff888105146000 R15: 00000000000000b0\n FS:  0000000000000000(0000) GS:ffff88885fa00000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000012 CR3: 00000001077e6001 CR4: 0000000000370eb0\n Call Trace:\n  \u003cTASK\u003e\n  ? __die+0x20/0x60\n  ? page_fault_oops+0x150/0x3e0\n  ? exc_page_fault+0x74/0x130\n  ? asm_exc_page_fault+0x22/0x30\n  ? mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib]\n  __ib_process_cq+0x5a/0x150 [ib_core]\n  ib_cq_poll_work+0x31/0x90 [ib_core]\n  process_one_work+0x169/0x320\n  worker_thread+0x288/0x3a0\n  ? work_busy+0xb0/0xb0\n  kthread+0xd7/0x1f0\n  ? kthreads_online_cpu+0x130/0x130\n  ? kthreads_online_cpu+0x130/0x130\n  ret_from_fork+0x2d/0x50\n  ? kthreads_online_cpu+0x130/0x130\n  ret_from_fork_asm+0x11/0x20\n  \u003c/TASK\u003e"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/mlx5: Arreglar el flujo de actualizaci\u00f3n de mlx5_poll_one() cur_qp Cuando cur_qp no es NULL, para evitar obtener el QP del \u00e1rbol de radix de nuevo, verificamos si el siguiente QP de cqe es id\u00e9ntico al que ya tenemos. Sin embargo, el error es que estamos verificando si el QP es id\u00e9ntico al comparar el n\u00famero de QP dentro del CQE con el n\u00famero de QP dentro de mlx5_ib_qp, pero eso es incorrecto ya que el n\u00famero de QP del CQE es de FW, por lo que debe coincidir con mlx5_core_qp, que es nuestro n\u00famero de QP de FW. De lo contrario, podr\u00edamos usar el QP incorrecto al gestionar un CQE, lo que podr\u00eda causar el siguiente rastreo del kernel. Este problema se nota principalmente en los QP 0 y 1, ya que por ahora son los \u00fanicos QP en nuestro controlador, mientras que el n\u00famero de QP dentro de mlx5_ib_qp no coincide con el n\u00famero de QP dentro de mlx5_core_qp. ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000012 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - p\u00e1gina no presente PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP CPU: 0 UID: 0 PID: 7927 Comm: kworker/u62:1 No contaminado 6.14.0-rc3+ #189 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 Cola de trabajo: ib-comp-unb-wq ib_cq_poll_work [ib_core] RIP: 0010:mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib] C\u00f3digo: 03 00 00 8d 58 ff 21 cb 66 39 d3 74 39 48 c7 c7 3c 89 6e a0 0f b7 db e8 b7 d2 b3 e0 49 8b 86 60 03 00 00 48 c7 c7 4a 89 6e a0 \u0026lt;0f\u0026gt; b7 5c 98 02 e8 9f d2 b3 e0 41 0f b7 86 78 03 00 00 83 e8 01 21 RSP: 0018:ffff88810511bd60 EFLAGS: 00010046 RAX: 0000000000000010 RBX: 00000000000000000 RCX: 0000000000000000 RDX: 00000000000000000 RSI: ffff88885fa1b3c0 RDI: fffffffa06e894a RBP: 00000000000000b0 R08: 00000000000000000 R09: ffff88810511bc10 R10: 0000000000000001 R11: 00000000000000001 R12: ffff88810d593000 R13: ffff88810e579108 R14: ffff888105146000 R15: 00000000000000b0 FS: 0000000000000000(0000) GS:ffff88885fa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000012 CR3: 00000001077e6001 CR4: 0000000000370eb0 Seguimiento de llamadas:  ? __die+0x20/0x60 ? page_fault_oops+0x150/0x3e0 ? exc_page_fault+0x74/0x130 ? asm_exc_page_fault+0x22/0x30 ? mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib] __ib_process_cq+0x5a/0x150 [ib_core] ib_cq_poll_work+0x31/0x90 [ib_core] process_one_work+0x169/0x320 worker_thread+0x288/0x3a0 ? work_busy+0xb0/0xb0 kthread+0xd7/0x1f0 ? kthreads_online_cpu+0x130/0x130 ? kthreads_online_cpu+0x130/0x130 ret_from_fork+0x2d/0x50 ? kthreads_online_cpu+0x130/0x130 ret_from_fork_asm+0x11/0x20 "
    }
  ],
  "id": "CVE-2025-22086",
  "lastModified": "2025-04-17T20:22:16.240",
  "metrics": {},
  "published": "2025-04-16T15:16:02.800",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3b97d77049856865ac5ce8ffbc6e716928310f7f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/55c65a64aefa6267b964d90e9a4039cb68ec73a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5ed3b0cb3f827072e93b4c5b6e2b8106fd7cccbd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7c51a6964b45b6d40027abd77e89cef30d26dc5a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/856d9e5d72dc44eca6d5a153581c58fbd84e92e1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cad677085274ecf9c7565b5bfc5d2e49acbf174c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d52636eb13ccba448a752964cc6fc49970912874"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dc7139b7031d877acd73d7eff55670f22f48cd5e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f0447ceb8a31d79bee7144f98f9a13f765531e1a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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