CVE-2021-47197
Vulnerability from cvelistv5
Published
2024-04-10 18:56
Modified
2024-11-04 12:01
Severity ?
Summary
net/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ae38157080616a13a9fe3f0b4b6ec0070aa408a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/471c492890557bd58f73314bb4ad85d5a8fd5026
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/76ded29d3fcda4928da8849ffc446ea46871c1c2
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2ae38157080616a13a9fe3f0b4b6ec0070aa408a
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/471c492890557bd58f73314bb4ad85d5a8fd5026
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/76ded29d3fcda4928da8849ffc446ea46871c1c2
Impacted products
Vendor Product Version
Linux Linux Version: 5.15
Show details on NVD website

To clipboard 

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                "id": "CVE-2021-47197",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-06-21T16:04:48.403112Z",
                "version": "2.0.3"
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        "title": "CVE Program Container"
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/cq.c",
            "drivers/net/ethernet/mellanox/mlx5/core/debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "4f7bddf8c5c0",
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/cq.c",
            "drivers/net/ethernet/mellanox/mlx5/core/debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.15"
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              "status": "unaffected",
              "version": "0",
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              "version": "5.10.82",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.15.5",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: nullify cq-\u003edbg pointer in mlx5_debug_cq_remove()\n\nPrior to this patch in case mlx5_core_destroy_cq() failed it proceeds\nto rest of destroy operations. mlx5_core_destroy_cq() could be called again\nby user and cause additional call of mlx5_debug_cq_remove().\ncq-\u003edbg was not nullify in previous call and cause the crash.\n\nFix it by nullify cq-\u003edbg pointer after removal.\n\nAlso proceed to destroy operations only if FW return 0\nfor MLX5_CMD_OP_DESTROY_CQ command.\n\ngeneral protection fault, probably for non-canonical address 0x2000300004058: 0000 [#1] SMP PTI\nCPU: 5 PID: 1228 Comm: python Not tainted 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:lockref_get+0x1/0x60\nCode: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02\n00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 \u003c48\u003e 8b 17\n48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48\nRSP: 0018:ffff888137dd7a38 EFLAGS: 00010206\nRAX: 0000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe\nRDX: 000000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058\nRBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000\nR13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0\nFS:  00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000)\nknlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0\nCall Trace:\n  simple_recursive_removal+0x33/0x2e0\n  ? debugfs_remove+0x60/0x60\n  debugfs_remove+0x40/0x60\n  mlx5_debug_cq_remove+0x32/0x70 [mlx5_core]\n  mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core]\n  devx_obj_cleanup+0x151/0x330 [mlx5_ib]\n  ? __pollwait+0xd0/0xd0\n  ? xas_load+0x5/0x70\n  ? xa_load+0x62/0xa0\n  destroy_hw_idr_uobject+0x20/0x80 [ib_uverbs]\n  uverbs_destroy_uobject+0x3b/0x360 [ib_uverbs]\n  uobj_destroy+0x54/0xa0 [ib_uverbs]\n  ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs]\n  ? uverbs_finalize_object+0xd0/0xd0 [ib_uverbs]\n  ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs]\n  __x64_sys_ioctl+0x3e4/0x8e0"
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      "title": "net/mlx5e: nullify cq-\u003edbg pointer in mlx5_debug_cq_remove()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47197",
    "datePublished": "2024-04-10T18:56:33.260Z",
    "dateReserved": "2024-03-25T09:12:14.116Z",
    "dateUpdated": "2024-11-04T12:01:20.622Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47197\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-10T19:15:47.940\",\"lastModified\":\"2024-11-21T06:35:36.657\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5e: nullify cq-\u003edbg pointer in mlx5_debug_cq_remove()\\n\\nPrior to this patch in case mlx5_core_destroy_cq() failed it proceeds\\nto rest of destroy operations. mlx5_core_destroy_cq() could be called again\\nby user and cause additional call of mlx5_debug_cq_remove().\\ncq-\u003edbg was not nullify in previous call and cause the crash.\\n\\nFix it by nullify cq-\u003edbg pointer after removal.\\n\\nAlso proceed to destroy operations only if FW return 0\\nfor MLX5_CMD_OP_DESTROY_CQ command.\\n\\ngeneral protection fault, probably for non-canonical address 0x2000300004058: 0000 [#1] SMP PTI\\nCPU: 5 PID: 1228 Comm: python Not tainted 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:lockref_get+0x1/0x60\\nCode: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02\\n00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 \u003c48\u003e 8b 17\\n48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48\\nRSP: 0018:ffff888137dd7a38 EFLAGS: 00010206\\nRAX: 0000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe\\nRDX: 000000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058\\nRBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88\\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000\\nR13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0\\nFS:  00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000)\\nknlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0\\nCall Trace:\\n  simple_recursive_removal+0x33/0x2e0\\n  ? debugfs_remove+0x60/0x60\\n  debugfs_remove+0x40/0x60\\n  mlx5_debug_cq_remove+0x32/0x70 [mlx5_core]\\n  mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core]\\n  devx_obj_cleanup+0x151/0x330 [mlx5_ib]\\n  ? __pollwait+0xd0/0xd0\\n  ? xas_load+0x5/0x70\\n  ? xa_load+0x62/0xa0\\n  destroy_hw_idr_uobject+0x20/0x80 [ib_uverbs]\\n  uverbs_destroy_uobject+0x3b/0x360 [ib_uverbs]\\n  uobj_destroy+0x54/0xa0 [ib_uverbs]\\n  ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs]\\n  ? uverbs_finalize_object+0xd0/0xd0 [ib_uverbs]\\n  ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs]\\n  __x64_sys_ioctl+0x3e4/0x8e0\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5e: anular el puntero cq-\u0026gt;dbg en mlx5_debug_cq_remove() Antes de este parche, en caso de que mlx5_core_destroy_cq() fallara, se proced\u00eda al resto de las operaciones de destrucci\u00f3n. El usuario pod\u00eda volver a llamar a mlx5_core_destroy_cq() y provocar una llamada adicional de mlx5_debug_cq_remove(). cq-\u0026gt;dbg no se anul\u00f3 en la llamada anterior y provoc\u00f3 el bloqueo. Arr\u00e9glelo anulando el puntero cq-\u0026gt;dbg despu\u00e9s de la eliminaci\u00f3n. Tambi\u00e9n proceda a destruir las operaciones solo si el firmware devuelve 0 para el comando MLX5_CMD_OP_DESTROY_CQ. Fallo de protecci\u00f3n general, probablemente por direcci\u00f3n no can\u00f3nica 0x2000300004058:0000 [#1] SMP PTI CPU: 5 PID: 1228 Comm: python No contaminado 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:lockref_get+0x1/0x60 C\u00f3digo: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02 00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 \u0026lt;48\u0026gt; 8b 17 48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48 RSP: 0018:ffff888137dd7a38 EFLAGS: 00010206 RAX: 000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe RDX: 00000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058 RBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000 R13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0 FS: 00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0 Seguimiento de llamadas: simple_recursive_removal+0x33/0x2e0 ? debugfs_remove+0x60/0x60 debugfs_remove+0x40/0x60 mlx5_debug_cq_remove+0x32/0x70 [mlx5_core] mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core] devx_obj_cleanup+0x151/0x330 [mlx5_ib] ? __pollwait+0xd0/0xd0 ? xas_load+0x5/0x70 ? uverbs_destruir_uobject+0x3b/0x360 [ib_uverbs] uobj_destruir+0x54/0xa0 [ib_uverbs] ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs] ? uverbs_finalizar_objeto+0xd0/0xd0 [ib_uverbs] ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs] __x64_sys_ioctl+0x3e4/0x8e0\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2ae38157080616a13a9fe3f0b4b6ec0070aa408a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/471c492890557bd58f73314bb4ad85d5a8fd5026\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/76ded29d3fcda4928da8849ffc446ea46871c1c2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2ae38157080616a13a9fe3f0b4b6ec0070aa408a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/471c492890557bd58f73314bb4ad85d5a8fd5026\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/76ded29d3fcda4928da8849ffc446ea46871c1c2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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