cve-2022-48976
Vulnerability from cvelistv5
Published
2024-10-21 20:05
Modified
2024-11-04 12:20
Severity ?
Summary
netfilter: flowtable_offload: fix using __this_cpu_add in preemptible
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a220a11fda012fba506b35929672374c2723ae6dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a81047154e7ce4eb8769d5d21adcbc9693542a79Patch
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48976",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:18:28.477565Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:18:44.516Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_flow_table_offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a220a11fda01",
              "status": "affected",
              "version": "b038177636f8",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "b038177636f8",
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_flow_table_offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable_offload: fix using __this_cpu_add in preemptible\n\nflow_offload_queue_work() can be called in workqueue without\nbh disabled, like the call trace showed in my act_ct testing,\ncalling NF_FLOW_TABLE_STAT_INC() there would cause a call\ntrace:\n\n  BUG: using __this_cpu_add() in preemptible [00000000] code: kworker/u4:0/138560\n  caller is flow_offload_queue_work+0xec/0x1b0 [nf_flow_table]\n  Workqueue: act_ct_workqueue tcf_ct_flow_table_cleanup_work [act_ct]\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x33/0x46\n   check_preemption_disabled+0xc3/0xf0\n   flow_offload_queue_work+0xec/0x1b0 [nf_flow_table]\n   nf_flow_table_iterate+0x138/0x170 [nf_flow_table]\n   nf_flow_table_free+0x140/0x1a0 [nf_flow_table]\n   tcf_ct_flow_table_cleanup_work+0x2f/0x2b0 [act_ct]\n   process_one_work+0x6a3/0x1030\n   worker_thread+0x8a/0xdf0\n\nThis patch fixes it by using NF_FLOW_TABLE_STAT_INC_ATOMIC()\ninstead in flow_offload_queue_work().\n\nNote that for FLOW_CLS_REPLACE branch in flow_offload_queue_work(),\nit may not be called in preemptible path, but it\u0027s good to use\nNF_FLOW_TABLE_STAT_INC_ATOMIC() for all cases in\nflow_offload_queue_work()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T12:20:17.481Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a220a11fda012fba506b35929672374c2723ae6d"
        },
        {
          "url": "https://git.kernel.org/stable/c/a81047154e7ce4eb8769d5d21adcbc9693542a79"
        }
      ],
      "title": "netfilter: flowtable_offload: fix using __this_cpu_add in preemptible",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48976",
    "datePublished": "2024-10-21T20:05:55.739Z",
    "dateReserved": "2024-08-22T01:27:53.632Z",
    "dateUpdated": "2024-11-04T12:20:17.481Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48976\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T20:15:09.680\",\"lastModified\":\"2024-10-25T18:47:40.823\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: flowtable_offload: fix using __this_cpu_add in preemptible\\n\\nflow_offload_queue_work() can be called in workqueue without\\nbh disabled, like the call trace showed in my act_ct testing,\\ncalling NF_FLOW_TABLE_STAT_INC() there would cause a call\\ntrace:\\n\\n  BUG: using __this_cpu_add() in preemptible [00000000] code: kworker/u4:0/138560\\n  caller is flow_offload_queue_work+0xec/0x1b0 [nf_flow_table]\\n  Workqueue: act_ct_workqueue tcf_ct_flow_table_cleanup_work [act_ct]\\n  Call Trace:\\n   \u003cTASK\u003e\\n   dump_stack_lvl+0x33/0x46\\n   check_preemption_disabled+0xc3/0xf0\\n   flow_offload_queue_work+0xec/0x1b0 [nf_flow_table]\\n   nf_flow_table_iterate+0x138/0x170 [nf_flow_table]\\n   nf_flow_table_free+0x140/0x1a0 [nf_flow_table]\\n   tcf_ct_flow_table_cleanup_work+0x2f/0x2b0 [act_ct]\\n   process_one_work+0x6a3/0x1030\\n   worker_thread+0x8a/0xdf0\\n\\nThis patch fixes it by using NF_FLOW_TABLE_STAT_INC_ATOMIC()\\ninstead in flow_offload_queue_work().\\n\\nNote that for FLOW_CLS_REPLACE branch in flow_offload_queue_work(),\\nit may not be called in preemptible path, but it\u0027s good to use\\nNF_FLOW_TABLE_STAT_INC_ATOMIC() for all cases in\\nflow_offload_queue_work().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: flowtable_offload: correcci\u00f3n al usar __this_cpu_add en preemptible flow_offload_queue_work() se puede llamar en workqueue sin bh deshabilitado, como el seguimiento de llamadas que mostr\u00f3 en mi prueba act_ct, llamar a NF_FLOW_TABLE_STAT_INC() all\u00ed causar\u00eda un seguimiento de llamadas: ERROR: usar __this_cpu_add() en preemptible [00000000] c\u00f3digo: kworker/u4:0/138560 el llamador es flow_offload_queue_work+0xec/0x1b0 [nf_flow_table] Workqueue: act_ct_workqueue tcf_ct_flow_table_cleanup_work [act_ct] Seguimiento de llamadas:  dump_stack_lvl+0x33/0x46 check_preemption_disabled+0xc3/0xf0 Este parche lo corrige al usar NF_FLOW_TABLE_STAT_INC_ATOMIC() en lugar de flow_offload_queue_work(). Tenga en cuenta que para la rama FLOW_CLS_REPLACE en flow_offload_queue_work(), es posible que no se la llame en una ruta preemptible, pero es bueno usar NF_FLOW_TABLE_STAT_INC_ATOMIC() para todos los casos en flow_offload_queue_work().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.157\",\"versionEndExcluding\":\"6.0.13\",\"matchCriteriaId\":\"3FC10E8F-D0FF-45C4-A8F5-7ABB6F91A19E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B77A9280-37E6-49AD-B559-5B23A3B1DC3D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE5298B3-04B4-4F3E-B186-01A58B5C75A6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc8:*:*:*:*:*:*\",\"matchCriteriaId\":\"E9D7C49C-53E7-4B23-9AFE-DAC5A18B153A\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a220a11fda012fba506b35929672374c2723ae6d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a81047154e7ce4eb8769d5d21adcbc9693542a79\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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