cve-2022-48876
Vulnerability from cvelistv5
Published
2024-08-21 06:10
Modified
2025-04-09 14:50
Severity ?
Summary
wifi: mac80211: fix initialization of rx->link and rx->link_sta
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a57c981d9f24d2bd89eaa76dc477e8ca252e22e8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e66b7920aa5ac5b1a1997a454004ba9246a3c005Patch
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48876",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:05:13.063011Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:32:53.407Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a57c981d9f24d2bd89eaa76dc477e8ca252e22e8",
              "status": "affected",
              "version": "ccdde7c74ffd7e8bdd3cf685bbfa41231c8e3131",
              "versionType": "git"
            },
            {
              "lessThan": "e66b7920aa5ac5b1a1997a454004ba9246a3c005",
              "status": "affected",
              "version": "ccdde7c74ffd7e8bdd3cf685bbfa41231c8e3131",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: fix initialization of rx-\u003elink and rx-\u003elink_sta\n\nThere are some codepaths that do not initialize rx-\u003elink_sta properly. This\ncauses a crash in places which assume that rx-\u003elink_sta is valid if rx-\u003esta\nis valid.\nOne known instance is triggered by __ieee80211_rx_h_amsdu being called from\nfast-rx. It results in a crash like this one:\n\n BUG: kernel NULL pointer dereference, address: 00000000000000a8\n #PF: supervisor write access in kernel mode\n #PF: error_code(0x0002) - not-present page PGD 0 P4D 0\n Oops: 0002 [#1] PREEMPT SMP PTI\n CPU: 1 PID: 506 Comm: mt76-usb-rx phy Tainted: G            E      6.1.0-debian64x+1.7 #3\n Hardware name: ZOTAC ZBOX-ID92/ZBOX-IQ01/ZBOX-ID92/ZBOX-IQ01, BIOS B220P007 05/21/2014\n RIP: 0010:ieee80211_deliver_skb+0x62/0x1f0 [mac80211]\n Code: 00 48 89 04 24 e8 9e a7 c3 df 89 c0 48 03 1c c5 a0 ea 39 a1 4c 01 6b 08 48 ff 03 48\n       83 7d 28 00 74 11 48 8b 45 30 48 63 55 44 \u003c48\u003e 83 84 d0 a8 00 00 00 01 41 8b 86 c0\n       11 00 00 8d 50 fd 83 fa 01\n RSP: 0018:ffff999040803b10 EFLAGS: 00010286\n RAX: 0000000000000000 RBX: ffffb9903f496480 RCX: 0000000000000000\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: ffff999040803ce0 R08: 0000000000000000 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000000 R12: ffff8d21828ac900\n R13: 000000000000004a R14: ffff8d2198ed89c0 R15: ffff8d2198ed8000\n FS:  0000000000000000(0000) GS:ffff8d24afe80000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00000000000000a8 CR3: 0000000429810002 CR4: 00000000001706e0\n Call Trace:\n  \u003cTASK\u003e\n  __ieee80211_rx_h_amsdu+0x1b5/0x240 [mac80211]\n  ? ieee80211_prepare_and_rx_handle+0xcdd/0x1320 [mac80211]\n  ? __local_bh_enable_ip+0x3b/0xa0\n  ieee80211_prepare_and_rx_handle+0xcdd/0x1320 [mac80211]\n  ? prepare_transfer+0x109/0x1a0 [xhci_hcd]\n  ieee80211_rx_list+0xa80/0xda0 [mac80211]\n  mt76_rx_complete+0x207/0x2e0 [mt76]\n  mt76_rx_poll_complete+0x357/0x5a0 [mt76]\n  mt76u_rx_worker+0x4f5/0x600 [mt76_usb]\n  ? mt76_get_min_avg_rssi+0x140/0x140 [mt76]\n  __mt76_worker_fn+0x50/0x80 [mt76]\n  kthread+0xed/0x120\n  ? kthread_complete_and_exit+0x20/0x20\n  ret_from_fork+0x22/0x30\n\nSince the initialization of rx-\u003elink and rx-\u003elink_sta is rather convoluted\nand duplicated in many places, clean it up by using a helper function to\nset it.\n\n[remove unnecessary rx-\u003esta-\u003esta.mlo check]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-04-09T14:50:54.714Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a57c981d9f24d2bd89eaa76dc477e8ca252e22e8"
        },
        {
          "url": "https://git.kernel.org/stable/c/e66b7920aa5ac5b1a1997a454004ba9246a3c005"
        }
      ],
      "title": "wifi: mac80211: fix initialization of rx-\u003elink and rx-\u003elink_sta",
      "x_generator": {
        "engine": "bippy-7c5fe7eed585"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48876",
    "datePublished": "2024-08-21T06:10:07.310Z",
    "dateReserved": "2024-07-16T11:38:08.922Z",
    "dateUpdated": "2025-04-09T14:50:54.714Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48876\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-21T07:15:04.500\",\"lastModified\":\"2024-08-29T02:41:34.627\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: mac80211: fix initialization of rx-\u003elink and rx-\u003elink_sta\\n\\nThere are some codepaths that do not initialize rx-\u003elink_sta properly. This\\ncauses a crash in places which assume that rx-\u003elink_sta is valid if rx-\u003esta\\nis valid.\\nOne known instance is triggered by __ieee80211_rx_h_amsdu being called from\\nfast-rx. It results in a crash like this one:\\n\\n BUG: kernel NULL pointer dereference, address: 00000000000000a8\\n #PF: supervisor write access in kernel mode\\n #PF: error_code(0x0002) - not-present page PGD 0 P4D 0\\n Oops: 0002 [#1] PREEMPT SMP PTI\\n CPU: 1 PID: 506 Comm: mt76-usb-rx phy Tainted: G            E      6.1.0-debian64x+1.7 #3\\n Hardware name: ZOTAC ZBOX-ID92/ZBOX-IQ01/ZBOX-ID92/ZBOX-IQ01, BIOS B220P007 05/21/2014\\n RIP: 0010:ieee80211_deliver_skb+0x62/0x1f0 [mac80211]\\n Code: 00 48 89 04 24 e8 9e a7 c3 df 89 c0 48 03 1c c5 a0 ea 39 a1 4c 01 6b 08 48 ff 03 48\\n       83 7d 28 00 74 11 48 8b 45 30 48 63 55 44 \u003c48\u003e 83 84 d0 a8 00 00 00 01 41 8b 86 c0\\n       11 00 00 8d 50 fd 83 fa 01\\n RSP: 0018:ffff999040803b10 EFLAGS: 00010286\\n RAX: 0000000000000000 RBX: ffffb9903f496480 RCX: 0000000000000000\\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\\n RBP: ffff999040803ce0 R08: 0000000000000000 R09: 0000000000000000\\n R10: 0000000000000000 R11: 0000000000000000 R12: ffff8d21828ac900\\n R13: 000000000000004a R14: ffff8d2198ed89c0 R15: ffff8d2198ed8000\\n FS:  0000000000000000(0000) GS:ffff8d24afe80000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 00000000000000a8 CR3: 0000000429810002 CR4: 00000000001706e0\\n Call Trace:\\n  \u003cTASK\u003e\\n  __ieee80211_rx_h_amsdu+0x1b5/0x240 [mac80211]\\n  ? ieee80211_prepare_and_rx_handle+0xcdd/0x1320 [mac80211]\\n  ? __local_bh_enable_ip+0x3b/0xa0\\n  ieee80211_prepare_and_rx_handle+0xcdd/0x1320 [mac80211]\\n  ? prepare_transfer+0x109/0x1a0 [xhci_hcd]\\n  ieee80211_rx_list+0xa80/0xda0 [mac80211]\\n  mt76_rx_complete+0x207/0x2e0 [mt76]\\n  mt76_rx_poll_complete+0x357/0x5a0 [mt76]\\n  mt76u_rx_worker+0x4f5/0x600 [mt76_usb]\\n  ? mt76_get_min_avg_rssi+0x140/0x140 [mt76]\\n  __mt76_worker_fn+0x50/0x80 [mt76]\\n  kthread+0xed/0x120\\n  ? kthread_complete_and_exit+0x20/0x20\\n  ret_from_fork+0x22/0x30\\n\\nSince the initialization of rx-\u003elink and rx-\u003elink_sta is rather convoluted\\nand duplicated in many places, clean it up by using a helper function to\\nset it.\\n\\n[remove unnecessary rx-\u003esta-\u003esta.mlo check]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mac80211: corrige la inicializaci\u00f3n de rx-\u0026gt;link y rx-\u0026gt;link_sta Hay algunas rutas de c\u00f3digo que no inicializan rx-\u0026gt;link_sta correctamente. Esto provoca un bloqueo en lugares que asumen que rx-\u0026gt;link_sta es v\u00e1lido si rx-\u0026gt;sta es v\u00e1lido. Una instancia conocida se activa cuando se llama a __ieee80211_rx_h_amsdu desde fast-rx. Resulta en un bloqueo como este: ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000a8 #PF: acceso de escritura del supervisor en modo kernel #PF: c\u00f3digo_error(0x0002) - p\u00e1gina no presente PGD 0 P4D 0 Ups: 0002 [#1 ] PREEMPT SMP PTI CPU: 1 PID: 506 Comm: mt76-usb-rx phy Contaminado: GE 6.1.0-debian64x+1.7 #3 Nombre del hardware: ZOTAC ZBOX-ID92/ZBOX-IQ01/ZBOX-ID92/ZBOX-IQ01, BIOS B220P007 21/05/2014 RIP: 0010:ieee80211_deliver_skb+0x62/0x1f0 [mac80211] C\u00f3digo: 00 48 89 04 24 e8 9e a7 c3 df 89 c0 48 03 1c c5 a0 ea 39 a1 4c 01 08 48 y siguientes 03 48 83 7d 28 00 74 11 48 8b 45 30 48 63 55 44 \u0026lt;48\u0026gt; 83 84 d0 a8 00 00 00 01 41 8b 86 c0 11 00 00 8d 50 fd 83 fa 01 RSP:ffff999040803b10 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffb9903f496480 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000000 RBP: ffff999040803ce0 R08: 00000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8d21828ac900 R13: 000000000000004a R14: 98ed89c0 R15: ffff8d2198ed8000 FS: 0000000000000000(0000) GS:ffff8d24afe80000( 0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000a8 CR3: 0000000429810002 CR4: 00000000001 706e0 Seguimiento de llamadas:  __ieee80211_rx_h_amsdu+0x1b5/0x240 [mac80211] ? ieee80211_prepare_and_rx_handle+0xcdd/0x1320 [mac80211]? __local_bh_enable_ip+0x3b/0xa0 ieee80211_prepare_and_rx_handle+0xcdd/0x1320 [mac80211]? prepare_transfer+0x109/0x1a0 [xhci_hcd] ieee80211_rx_list+0xa80/0xda0 [mac80211] mt76_rx_complete+0x207/0x2e0 [mt76] mt76_rx_poll_complete+0x357/0x5a0 [mt76u_rx_worker] +0x4f5/0x600 [mt76_usb] ? mt76_get_min_avg_rssi+0x140/0x140 [mt76] __mt76_worker_fn+0x50/0x80 [mt76] kthread+0xed/0x120 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30 Dado que la inicializaci\u00f3n de rx-\u0026gt;link y rx-\u0026gt;link_sta es bastante complicada y duplicada en muchos lugares, l\u00edmpiela usando una funci\u00f3n auxiliar para configurarla. [eliminar comprobaci\u00f3n innecesaria de rx-\u0026gt;sta-\u0026gt;sta.mlo]\"}],\"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\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1\",\"versionEndExcluding\":\"6.1.8\",\"matchCriteriaId\":\"0EF71645-1ABD-4584-8FEC-AF3D155E1F5B\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a57c981d9f24d2bd89eaa76dc477e8ca252e22e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e66b7920aa5ac5b1a1997a454004ba9246a3c005\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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