fkie_cve-2021-47540
Vulnerability from fkie_nvd
Published
2024-05-24 15:15
Modified
2024-11-21 06:36
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: mt76: mt7915: fix NULL pointer dereference in mt7915_get_phy_mode Fix the following NULL pointer dereference in mt7915_get_phy_mode routine adding an ibss interface to the mt7915 driver. [ 101.137097] wlan0: Trigger new scan to find an IBSS to join [ 102.827039] wlan0: Creating new IBSS network, BSSID 26:a4:50:1a:6e:69 [ 103.064756] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 103.073670] Mem abort info: [ 103.076520] ESR = 0x96000005 [ 103.079614] EC = 0x25: DABT (current EL), IL = 32 bits [ 103.084934] SET = 0, FnV = 0 [ 103.088042] EA = 0, S1PTW = 0 [ 103.091215] Data abort info: [ 103.094104] ISV = 0, ISS = 0x00000005 [ 103.098041] CM = 0, WnR = 0 [ 103.101044] user pgtable: 4k pages, 39-bit VAs, pgdp=00000000460b1000 [ 103.107565] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [ 103.116590] Internal error: Oops: 96000005 [#1] SMP [ 103.189066] CPU: 1 PID: 333 Comm: kworker/u4:3 Not tainted 5.10.75 #0 [ 103.195498] Hardware name: MediaTek MT7622 RFB1 board (DT) [ 103.201124] Workqueue: phy0 ieee80211_iface_work [mac80211] [ 103.206695] pstate: 20000005 (nzCv daif -PAN -UAO -TCO BTYPE=--) [ 103.212705] pc : mt7915_get_phy_mode+0x68/0x120 [mt7915e] [ 103.218103] lr : mt7915_mcu_add_bss_info+0x11c/0x760 [mt7915e] [ 103.223927] sp : ffffffc011cdb9e0 [ 103.227235] x29: ffffffc011cdb9e0 x28: ffffff8006563098 [ 103.232545] x27: ffffff8005f4da22 x26: ffffff800685ac40 [ 103.237855] x25: 0000000000000001 x24: 000000000000011f [ 103.243165] x23: ffffff8005f4e260 x22: ffffff8006567918 [ 103.248475] x21: ffffff8005f4df80 x20: ffffff800685ac58 [ 103.253785] x19: ffffff8006744400 x18: 0000000000000000 [ 103.259094] x17: 0000000000000000 x16: 0000000000000001 [ 103.264403] x15: 000899c3a2d9d2e4 x14: 000899bdc3c3a1c8 [ 103.269713] x13: 0000000000000000 x12: 0000000000000000 [ 103.275024] x11: ffffffc010e30c20 x10: 0000000000000000 [ 103.280333] x9 : 0000000000000050 x8 : ffffff8006567d88 [ 103.285642] x7 : ffffff8006563b5c x6 : ffffff8006563b44 [ 103.290952] x5 : 0000000000000002 x4 : 0000000000000001 [ 103.296262] x3 : 0000000000000001 x2 : 0000000000000001 [ 103.301572] x1 : 0000000000000000 x0 : 0000000000000011 [ 103.306882] Call trace: [ 103.309328] mt7915_get_phy_mode+0x68/0x120 [mt7915e] [ 103.314378] mt7915_bss_info_changed+0x198/0x200 [mt7915e] [ 103.319941] ieee80211_bss_info_change_notify+0x128/0x290 [mac80211] [ 103.326360] __ieee80211_sta_join_ibss+0x308/0x6c4 [mac80211] [ 103.332171] ieee80211_sta_create_ibss+0x8c/0x10c [mac80211] [ 103.337895] ieee80211_ibss_work+0x3dc/0x614 [mac80211] [ 103.343185] ieee80211_iface_work+0x388/0x3f0 [mac80211] [ 103.348495] process_one_work+0x288/0x690 [ 103.352499] worker_thread+0x70/0x464 [ 103.356157] kthread+0x144/0x150 [ 103.359380] ret_from_fork+0x10/0x18 [ 103.362952] Code: 394008c3 52800220 394000e4 7100007f (39400023)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/14b03b8cebdf18ff13c39d58501b625411314de2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e53d6d26920d5221d3f4d4f5ffdd629ea69aa5cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/932b338f4e5c4cb0c2ed640da3bced1e63620198Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/14b03b8cebdf18ff13c39d58501b625411314de2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6e53d6d26920d5221d3f4d4f5ffdd629ea69aa5cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/932b338f4e5c4cb0c2ed640da3bced1e63620198Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E9314948-D53C-419C-B785-89A3C0B287DE",
              "versionEndExcluding": "5.10.84",
              "versionStartIncluding": "5.8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A696A60B-2782-4119-83DD-1EFFBC903F02",
              "versionEndExcluding": "5.15.7",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: mt7915: fix NULL pointer dereference in mt7915_get_phy_mode\n\nFix the following NULL pointer dereference in mt7915_get_phy_mode\nroutine adding an ibss interface to the mt7915 driver.\n\n[  101.137097] wlan0: Trigger new scan to find an IBSS to join\n[  102.827039] wlan0: Creating new IBSS network, BSSID 26:a4:50:1a:6e:69\n[  103.064756] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n[  103.073670] Mem abort info:\n[  103.076520]   ESR = 0x96000005\n[  103.079614]   EC = 0x25: DABT (current EL), IL = 32 bits\n[  103.084934]   SET = 0, FnV = 0\n[  103.088042]   EA = 0, S1PTW = 0\n[  103.091215] Data abort info:\n[  103.094104]   ISV = 0, ISS = 0x00000005\n[  103.098041]   CM = 0, WnR = 0\n[  103.101044] user pgtable: 4k pages, 39-bit VAs, pgdp=00000000460b1000\n[  103.107565] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000\n[  103.116590] Internal error: Oops: 96000005 [#1] SMP\n[  103.189066] CPU: 1 PID: 333 Comm: kworker/u4:3 Not tainted 5.10.75 #0\n[  103.195498] Hardware name: MediaTek MT7622 RFB1 board (DT)\n[  103.201124] Workqueue: phy0 ieee80211_iface_work [mac80211]\n[  103.206695] pstate: 20000005 (nzCv daif -PAN -UAO -TCO BTYPE=--)\n[  103.212705] pc : mt7915_get_phy_mode+0x68/0x120 [mt7915e]\n[  103.218103] lr : mt7915_mcu_add_bss_info+0x11c/0x760 [mt7915e]\n[  103.223927] sp : ffffffc011cdb9e0\n[  103.227235] x29: ffffffc011cdb9e0 x28: ffffff8006563098\n[  103.232545] x27: ffffff8005f4da22 x26: ffffff800685ac40\n[  103.237855] x25: 0000000000000001 x24: 000000000000011f\n[  103.243165] x23: ffffff8005f4e260 x22: ffffff8006567918\n[  103.248475] x21: ffffff8005f4df80 x20: ffffff800685ac58\n[  103.253785] x19: ffffff8006744400 x18: 0000000000000000\n[  103.259094] x17: 0000000000000000 x16: 0000000000000001\n[  103.264403] x15: 000899c3a2d9d2e4 x14: 000899bdc3c3a1c8\n[  103.269713] x13: 0000000000000000 x12: 0000000000000000\n[  103.275024] x11: ffffffc010e30c20 x10: 0000000000000000\n[  103.280333] x9 : 0000000000000050 x8 : ffffff8006567d88\n[  103.285642] x7 : ffffff8006563b5c x6 : ffffff8006563b44\n[  103.290952] x5 : 0000000000000002 x4 : 0000000000000001\n[  103.296262] x3 : 0000000000000001 x2 : 0000000000000001\n[  103.301572] x1 : 0000000000000000 x0 : 0000000000000011\n[  103.306882] Call trace:\n[  103.309328]  mt7915_get_phy_mode+0x68/0x120 [mt7915e]\n[  103.314378]  mt7915_bss_info_changed+0x198/0x200 [mt7915e]\n[  103.319941]  ieee80211_bss_info_change_notify+0x128/0x290 [mac80211]\n[  103.326360]  __ieee80211_sta_join_ibss+0x308/0x6c4 [mac80211]\n[  103.332171]  ieee80211_sta_create_ibss+0x8c/0x10c [mac80211]\n[  103.337895]  ieee80211_ibss_work+0x3dc/0x614 [mac80211]\n[  103.343185]  ieee80211_iface_work+0x388/0x3f0 [mac80211]\n[  103.348495]  process_one_work+0x288/0x690\n[  103.352499]  worker_thread+0x70/0x464\n[  103.356157]  kthread+0x144/0x150\n[  103.359380]  ret_from_fork+0x10/0x18\n[  103.362952] Code: 394008c3 52800220 394000e4 7100007f (39400023)"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mt76: mt7915: corrige la desreferencia del puntero NULL en mt7915_get_phy_mode. Corrija la siguiente desreferencia del puntero NULL en la rutina mt7915_get_phy_mode agregando una interfaz ibss al controlador mt7915. [ 101.137097] wlan0: activa una nueva exploraci\u00f3n para encontrar un IBSS al que unirse [ 102.827039] wlan0: crea una nueva red IBSS, BSSID 26:a4:50:1a:6e:69 [ 103.064756] No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000000 [ 103.073670] Informaci\u00f3n de cancelaci\u00f3n de memoria: [ 103.076520] ESR = 0x96000005 [ 103.079614] EC = 0x25: DABT (EL actual), IL = 32 bits [ 103.084934] SET = 0, FnV = 0 [ 103.088042] EA = 0, 1PTW = 0 [ 103.091215] Informaci\u00f3n de cancelaci\u00f3n de datos: [ 103.094104] ISV = 0, ISS = 0x00000005 [ 103.098041] CM = 0, WnR = 0 [ 103.101044] tabla de p\u00e1ginas de usuario: p\u00e1ginas de 4k, VA de 39 bits, pgdp=00000000460 b1000 [ 103.107565 ] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [103.116590] Error interno: Ups: 96000005 [#1] SMP [103.189066] CPU: 1 PID: 333 Comunicaciones: kworker/u4:3 No contaminado 5.10.75 #0 [ 103.195498 ] Nombre del hardware: Placa MediaTek MT7622 RFB1 (DT) [103.201124] Cola de trabajo: phy0 ieee80211_iface_work [mac80211] [103.206695] pstate: 20000005 (nzCv daif -PAN -UAO -TCO BTYPE=--) [103.212705] pc: t7915_get_phy_mode+0x68/ 0x120 [MT7915E] [103.218103] LR: MT7915_MCU_ADD_BSS_INFO+0X11C/0X760 [MT7915E] [103.223927] SP: FFFFFFFC011CDB9E0 [103.222235] x29: F8006563098 [103.232545] x27: ffffff8005f4da22 x26: ffffff800685ac40 [103.237855] x25: 000000000000000001 x24: 000000000000011f [ 103.243165] x23: ffffff8005f4e260 x22: ffffff8006567918 [ 103.248475] x21: ffffff8005f4df80 x20: ffffff800685ac58 [ 103.253785] x19: 44400 x18: 0000000000000000 [ 103.259094] x17: 0000000000000000 x16: 0000000000000001 [ 103.264403] x15: 000899c3a2d9d2e4 x14: 99bdc3c3a1c8 [103.269713] x13: 0000000000000000 x12: 0000000000000000 [ 103.275024] x11: ffffffc010e30c20 x10: 0000000000000000 [ 103.280333] x9 : 0000000000000050 x8: ffffff8006567d88 [103.285642] x7: ffffff8006563b5c x6: ffffff8006563b44 [103.290952] x5: 00000000000000002 x4: 0000000000000001 [ 103.2 96262] x3: 0000000000000001 x2: 0000000000000001 [ 103.301572] x1: 0000000000000000 x0: 0000000000000011 [103.306882] Rastreo de llamadas: [103.309328] mt7915_get_phy_mode+0x68/0x120 [mt7915e] [ 378] mt7915_bss_info_changed+0x198/0x200 [mt7915e] [ 103.319941] ieee80211_bss_info_change_notify+0x128/0x290 [mac80211] [ 103.326360] __ieee80211_sta_join_ibss+0x308/0x6c4 [mac80211] [ 103.332171] ieee80211_sta_create_ibss+0x8c/0x10c [mac80211] [ 103.337895] 614 [mac80211] [ 103.343185] ieee80211_iface_work+0x388/0x3f0 [mac80211] [ 103.348495] Process_one_work+0x288/0x690 [ 103.352499] work_thread+0x70/0x464 [ 103.356157] kthread+0x144/0x150 [ 103.359380] ret_from_fork+0x10/0x18 [ 103.362952] C\u00f3digo: 394008c3 52800220 00e4 7100007f (39400023)"
    }
  ],
  "id": "CVE-2021-47540",
  "lastModified": "2024-11-21T06:36:29.773",
  "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": "2024-05-24T15:15:18.147",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/14b03b8cebdf18ff13c39d58501b625411314de2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6e53d6d26920d5221d3f4d4f5ffdd629ea69aa5c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/932b338f4e5c4cb0c2ed640da3bced1e63620198"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/14b03b8cebdf18ff13c39d58501b625411314de2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6e53d6d26920d5221d3f4d4f5ffdd629ea69aa5c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/932b338f4e5c4cb0c2ed640da3bced1e63620198"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.