fkie_cve-2024-46755
Vulnerability from fkie_nvd
Published
2024-09-18 08:15
Modified
2024-09-26 13:25
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id() mwifiex_get_priv_by_id() returns the priv pointer corresponding to the bss_num and bss_type, but without checking if the priv is actually currently in use. Unused priv pointers do not have a wiphy attached to them which can lead to NULL pointer dereferences further down the callstack. Fix this by returning only used priv pointers which have priv->bss_mode set to something else than NL80211_IFTYPE_UNSPECIFIED. Said NULL pointer dereference happened when an Accesspoint was started with wpa_supplicant -i mlan0 with this config: network={ ssid="somessid" mode=2 frequency=2412 key_mgmt=WPA-PSK WPA-PSK-SHA256 proto=RSN group=CCMP pairwise=CCMP psk="12345678" } When waiting for the AP to be established, interrupting wpa_supplicant with <ctrl-c> and starting it again this happens: | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140 | Mem abort info: | ESR = 0x0000000096000004 | EC = 0x25: DABT (current EL), IL = 32 bits | SET = 0, FnV = 0 | EA = 0, S1PTW = 0 | FSC = 0x04: level 0 translation fault | Data abort info: | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 | CM = 0, WnR = 0, TnD = 0, TagAccess = 0 | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000 | [0000000000000140] pgd=0000000000000000, p4d=0000000000000000 | Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP | Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio +mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs +imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6 | CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18 | Hardware name: somemachine (DT) | Workqueue: events sdio_irq_work | pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex] | lr : mwifiex_get_cfp+0x34/0x15c [mwifiex] | sp : ffff8000818b3a70 | x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004 | x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9 | x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000 | x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000 | x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517 | x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1 | x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157 | x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124 | x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000 | x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000 | Call trace: | mwifiex_get_cfp+0xd8/0x15c [mwifiex] | mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex] | mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex] | mwifiex_process_sta_event+0x298/0xf0c [mwifiex] | mwifiex_process_event+0x110/0x238 [mwifiex] | mwifiex_main_process+0x428/0xa44 [mwifiex] | mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio] | process_sdio_pending_irqs+0x64/0x1b8 | sdio_irq_work+0x4c/0x7c | process_one_work+0x148/0x2a0 | worker_thread+0x2fc/0x40c | kthread+0x110/0x114 | ret_from_fork+0x10/0x20 | Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000) | ---[ end trace 0000000000000000 ]---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a05d8d02cfa3540ea5dbd6b39446bd3f515521fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9813770f25855b866b8ead8155b8806b2db70f6dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a12cf97cbefa139ef8d95081f2ea047cbbd74b7aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c145eea2f75ff7949392aebecf7ef0a81c1f6c14Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c16916dd6c16fa7e13ca3923eb6b9f50d848ad03Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2618dcb26c7211342b54520b5b148c0d3471c8aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cb67b2e51b75f1a17bee7599c8161b96e1808a70Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d834433ff313838a259bb6607055ece87b895b66Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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          "negate": false,
          "operator": "OR"
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()\n\nmwifiex_get_priv_by_id() returns the priv pointer corresponding to\nthe bss_num and bss_type, but without checking if the priv is actually\ncurrently in use.\nUnused priv pointers do not have a wiphy attached to them which can\nlead to NULL pointer dereferences further down the callstack.  Fix\nthis by returning only used priv pointers which have priv-\u003ebss_mode\nset to something else than NL80211_IFTYPE_UNSPECIFIED.\n\nSaid NULL pointer dereference happened when an Accesspoint was started\nwith wpa_supplicant -i mlan0 with this config:\n\nnetwork={\n        ssid=\"somessid\"\n        mode=2\n        frequency=2412\n        key_mgmt=WPA-PSK WPA-PSK-SHA256\n        proto=RSN\n        group=CCMP\n        pairwise=CCMP\n        psk=\"12345678\"\n}\n\nWhen waiting for the AP to be established, interrupting wpa_supplicant\nwith \u003cctrl-c\u003e and starting it again this happens:\n\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140\n| Mem abort info:\n|   ESR = 0x0000000096000004\n|   EC = 0x25: DABT (current EL), IL = 32 bits\n|   SET = 0, FnV = 0\n|   EA = 0, S1PTW = 0\n|   FSC = 0x04: level 0 translation fault\n| Data abort info:\n|   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n|   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n|   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000\n| [0000000000000140] pgd=0000000000000000, p4d=0000000000000000\n| Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n| Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio\n+mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs\n+imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6\n| CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18\n| Hardware name: somemachine (DT)\n| Workqueue: events sdio_irq_work\n| pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n| pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n| lr : mwifiex_get_cfp+0x34/0x15c [mwifiex]\n| sp : ffff8000818b3a70\n| x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004\n| x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9\n| x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000\n| x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000\n| x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517\n| x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1\n| x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157\n| x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124\n| x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000\n| x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000\n| Call trace:\n|  mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n|  mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex]\n|  mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex]\n|  mwifiex_process_sta_event+0x298/0xf0c [mwifiex]\n|  mwifiex_process_event+0x110/0x238 [mwifiex]\n|  mwifiex_main_process+0x428/0xa44 [mwifiex]\n|  mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio]\n|  process_sdio_pending_irqs+0x64/0x1b8\n|  sdio_irq_work+0x4c/0x7c\n|  process_one_work+0x148/0x2a0\n|  worker_thread+0x2fc/0x40c\n|  kthread+0x110/0x114\n|  ret_from_fork+0x10/0x20\n| Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000)\n| ---[ end trace 0000000000000000 ]---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mwifiex: No devolver priv sin usar en mwifiex_get_priv_by_id() mwifiex_get_priv_by_id() devuelve el puntero priv correspondiente a bss_num y bss_type, pero sin comprobar si el priv est\u00e1 realmente en uso actualmente. Los punteros priv sin usar no tienen un wiphy adjunto a ellos, lo que puede provocar desreferencias de puntero NULL m\u00e1s abajo en la pila de llamadas. Solucione esto devolviendo solo punteros priv usados que tengan priv-\u0026gt;bss_mode establecido en algo distinto de NL80211_IFTYPE_UNSPECIFIED. Dicha desreferencia de puntero NULL ocurri\u00f3 cuando un Accesspoint fue iniciado con wpa_supplicant -i mlan0 con esta configuraci\u00f3n: network={ ssid=\"somessid\" mode=2 frequency=2412 key_mgmt=WPA-PSK WPA-PSK-SHA256 proto=RSN group=CCMP pairwise=CCMP psk=\"12345678\" } Al esperar a que se establezca el AP, interrumpiendo wpa_supplicant con  y reinici\u00e1ndolo esto sucede: | No se puede manejar la desreferencia de puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000140 | Informaci\u00f3n de aborto de memoria: | ESR = 0x0000000096000004 | EC = 0x25: DABT (EL actual), IL = 32 bits | SET = 0, FnV = 0 | EA = 0, S1PTW = 0 | FSC = 0x04: error de traducci\u00f3n de nivel 0 | Informaci\u00f3n de cancelaci\u00f3n de datos: | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 | CM = 0, WnR = 0, TnD = 0, TagAccess = 0 | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 | pgtable del usuario: p\u00e1ginas de 4k, VA de 48 bits, pgdp=0000000046d96000 | [0000000000000140] pgd=000000000000000, p4d=0000000000000000 | Error interno: Oops: 0000000096000004 [#1] PREEMPT SMP | M\u00f3dulos vinculados en: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio +mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs +imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6 | CPU: 0 PID: 8 Comm: kworker/0:1 No contaminado 6.9.0-00007-g937242013fce-dirty #18 | Nombre del hardware: somemachine (DT) | Cola de trabajo: eventos sdio_irq_work | pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex] | lr : mwifiex_get_cfp+0x34/0x15c [mwifiex] | sp : ffff8000818b3a70 | x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004 | x26: 000000000000002c x25: 00000000000001511 x24: 00000000002e86bc9 | x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000 | x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000 | x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517 | x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c0100000ffb1 | x11: 0100000000000000 x10: 02e8ff43002c0100 x9: 0000ffb100100157 | x8: ffff000003d20000 x7: 00000000000002f1 x6: 00000000ffffe124 | x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000 | x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000 | Rastreo de llamadas: | mwifiex_get_cfp+0xd8/0x15c [mwifiex] | mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex] | mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex] | mwifiex_process_sta_event+0x298/0xf0c [mwifiex] | mwifiex_process_event+0x110/0x238 [mwifiex] | mwifiex_main_process+0x428/0xa44 [mwifiex] | mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio] | proceso_sdio_pending_irqs+0x64/0x1b8 | sdio_irq_work+0x4c/0x7c | proceso_one_work+0x148/0x2a0 | subproceso_trabajador+0x2fc/0x40c | kthread+0x110/0x114 | ret_from_fork+0x10/0x20 | C\u00f3digo: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000) | ---[ fin del seguimiento 0000000000000000 ]---"
    }
  ],
  "id": "CVE-2024-46755",
  "lastModified": "2024-09-26T13:25:54.593",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-09-18T08:15:04.203",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1a05d8d02cfa3540ea5dbd6b39446bd3f515521f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9813770f25855b866b8ead8155b8806b2db70f6d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a12cf97cbefa139ef8d95081f2ea047cbbd74b7a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c145eea2f75ff7949392aebecf7ef0a81c1f6c14"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c16916dd6c16fa7e13ca3923eb6b9f50d848ad03"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c2618dcb26c7211342b54520b5b148c0d3471c8a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/cb67b2e51b75f1a17bee7599c8161b96e1808a70"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d834433ff313838a259bb6607055ece87b895b66"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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