CVE-2025-38450 (GCVE-0-2025-38450)
Vulnerability from cvelistv5
Published
2025-07-25 15:27
Modified
2025-07-28 04:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_sta_set_decap_offload() Add a NULL check for msta->vif before accessing its members to prevent a kernel panic in AP mode deployment. This also fix the issue reported in [1]. The crash occurs when this function is triggered before the station is fully initialized. The call trace shows a page fault at mt7925_sta_set_decap_offload() due to accessing resources when msta->vif is NULL. Fix this by adding an early return if msta->vif is NULL and also check wcid.sta is ready. This ensures we only proceed with decap offload configuration when the station's state is properly initialized. [14739.655703] Unable to handle kernel paging request at virtual address ffffffffffffffa0 [14739.811820] CPU: 0 UID: 0 PID: 895854 Comm: hostapd Tainted: G [14739.821394] Tainted: [C]=CRAP, [O]=OOT_MODULE [14739.825746] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT) [14739.831577] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [14739.838538] pc : mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common] [14739.845271] lr : mt7925_sta_set_decap_offload+0x58/0x1b8 [mt7925_common] [14739.851985] sp : ffffffc085efb500 [14739.855295] x29: ffffffc085efb500 x28: 0000000000000000 x27: ffffff807803a158 [14739.862436] x26: ffffff8041ececb8 x25: 0000000000000001 x24: 0000000000000001 [14739.869577] x23: 0000000000000001 x22: 0000000000000008 x21: ffffff8041ecea88 [14739.876715] x20: ffffff8041c19ca0 x19: ffffff8078031fe0 x18: 0000000000000000 [14739.883853] x17: 0000000000000000 x16: ffffffe2aeac1110 x15: 000000559da48080 [14739.890991] x14: 0000000000000001 x13: 0000000000000000 x12: 0000000000000000 [14739.898130] x11: 0a10020001008e88 x10: 0000000000001a50 x9 : ffffffe26457bfa0 [14739.905269] x8 : ffffff8042013bb0 x7 : ffffff807fb6cbf8 x6 : dead000000000100 [14739.912407] x5 : dead000000000122 x4 : ffffff80780326c8 x3 : 0000000000000000 [14739.919546] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffffff8041ececb8 [14739.926686] Call trace: [14739.929130] mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common] [14739.935505] ieee80211_check_fast_rx+0x19c/0x510 [mac80211] [14739.941344] _sta_info_move_state+0xe4/0x510 [mac80211] [14739.946860] sta_info_move_state+0x1c/0x30 [mac80211] [14739.952116] sta_apply_auth_flags.constprop.0+0x90/0x1b0 [mac80211] [14739.958708] sta_apply_parameters+0x234/0x5e0 [mac80211] [14739.964332] ieee80211_add_station+0xdc/0x190 [mac80211] [14739.969950] nl80211_new_station+0x46c/0x670 [cfg80211] [14739.975516] genl_family_rcv_msg_doit+0xdc/0x150 [14739.980158] genl_rcv_msg+0x218/0x298 [14739.983830] netlink_rcv_skb+0x64/0x138 [14739.987670] genl_rcv+0x40/0x60 [14739.990816] netlink_unicast+0x314/0x380 [14739.994742] netlink_sendmsg+0x198/0x3f0 [14739.998664] __sock_sendmsg+0x64/0xc0 [14740.002324] ____sys_sendmsg+0x260/0x298 [14740.006242] ___sys_sendmsg+0xb4/0x110
References
Impacted products
Vendor Product Version
Linux Linux Version: b859ad65309a5f1654e8b284de582831fc88e2d8
Version: b859ad65309a5f1654e8b284de582831fc88e2d8
Version: b859ad65309a5f1654e8b284de582831fc88e2d8
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7925/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9b50874f297fcc62adc7396f35209878e51010b0",
              "status": "affected",
              "version": "b859ad65309a5f1654e8b284de582831fc88e2d8",
              "versionType": "git"
            },
            {
              "lessThan": "91c3dec2453b3742e8f666957b99945edc30577f",
              "status": "affected",
              "version": "b859ad65309a5f1654e8b284de582831fc88e2d8",
              "versionType": "git"
            },
            {
              "lessThan": "35ad47c0b3da04b00b19a8b9ed5632e2f2520472",
              "status": "affected",
              "version": "b859ad65309a5f1654e8b284de582831fc88e2d8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7925/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.39",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.7",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_sta_set_decap_offload()\n\nAdd a NULL check for msta-\u003evif before accessing its members to prevent\na kernel panic in AP mode deployment. This also fix the issue reported\nin [1].\n\nThe crash occurs when this function is triggered before the station is\nfully initialized. The call trace shows a page fault at\nmt7925_sta_set_decap_offload() due to accessing resources when msta-\u003evif\nis NULL.\n\nFix this by adding an early return if msta-\u003evif is NULL and also check\nwcid.sta is ready. This ensures we only proceed with decap offload\nconfiguration when the station\u0027s state is properly initialized.\n\n[14739.655703] Unable to handle kernel paging request at virtual address ffffffffffffffa0\n[14739.811820] CPU: 0 UID: 0 PID: 895854 Comm: hostapd Tainted: G\n[14739.821394] Tainted: [C]=CRAP, [O]=OOT_MODULE\n[14739.825746] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)\n[14739.831577] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[14739.838538] pc : mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common]\n[14739.845271] lr : mt7925_sta_set_decap_offload+0x58/0x1b8 [mt7925_common]\n[14739.851985] sp : ffffffc085efb500\n[14739.855295] x29: ffffffc085efb500 x28: 0000000000000000 x27: ffffff807803a158\n[14739.862436] x26: ffffff8041ececb8 x25: 0000000000000001 x24: 0000000000000001\n[14739.869577] x23: 0000000000000001 x22: 0000000000000008 x21: ffffff8041ecea88\n[14739.876715] x20: ffffff8041c19ca0 x19: ffffff8078031fe0 x18: 0000000000000000\n[14739.883853] x17: 0000000000000000 x16: ffffffe2aeac1110 x15: 000000559da48080\n[14739.890991] x14: 0000000000000001 x13: 0000000000000000 x12: 0000000000000000\n[14739.898130] x11: 0a10020001008e88 x10: 0000000000001a50 x9 : ffffffe26457bfa0\n[14739.905269] x8 : ffffff8042013bb0 x7 : ffffff807fb6cbf8 x6 : dead000000000100\n[14739.912407] x5 : dead000000000122 x4 : ffffff80780326c8 x3 : 0000000000000000\n[14739.919546] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffffff8041ececb8\n[14739.926686] Call trace:\n[14739.929130]  mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common]\n[14739.935505]  ieee80211_check_fast_rx+0x19c/0x510 [mac80211]\n[14739.941344]  _sta_info_move_state+0xe4/0x510 [mac80211]\n[14739.946860]  sta_info_move_state+0x1c/0x30 [mac80211]\n[14739.952116]  sta_apply_auth_flags.constprop.0+0x90/0x1b0 [mac80211]\n[14739.958708]  sta_apply_parameters+0x234/0x5e0 [mac80211]\n[14739.964332]  ieee80211_add_station+0xdc/0x190 [mac80211]\n[14739.969950]  nl80211_new_station+0x46c/0x670 [cfg80211]\n[14739.975516]  genl_family_rcv_msg_doit+0xdc/0x150\n[14739.980158]  genl_rcv_msg+0x218/0x298\n[14739.983830]  netlink_rcv_skb+0x64/0x138\n[14739.987670]  genl_rcv+0x40/0x60\n[14739.990816]  netlink_unicast+0x314/0x380\n[14739.994742]  netlink_sendmsg+0x198/0x3f0\n[14739.998664]  __sock_sendmsg+0x64/0xc0\n[14740.002324]  ____sys_sendmsg+0x260/0x298\n[14740.006242]  ___sys_sendmsg+0xb4/0x110"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:22:41.338Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9b50874f297fcc62adc7396f35209878e51010b0"
        },
        {
          "url": "https://git.kernel.org/stable/c/91c3dec2453b3742e8f666957b99945edc30577f"
        },
        {
          "url": "https://git.kernel.org/stable/c/35ad47c0b3da04b00b19a8b9ed5632e2f2520472"
        }
      ],
      "title": "wifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_sta_set_decap_offload()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38450",
    "datePublished": "2025-07-25T15:27:31.372Z",
    "dateReserved": "2025-04-16T04:51:24.018Z",
    "dateUpdated": "2025-07-28T04:22:41.338Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38450\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T16:15:30.560\",\"lastModified\":\"2025-07-29T14:14:55.157\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_sta_set_decap_offload()\\n\\nAdd a NULL check for msta-\u003evif before accessing its members to prevent\\na kernel panic in AP mode deployment. This also fix the issue reported\\nin [1].\\n\\nThe crash occurs when this function is triggered before the station is\\nfully initialized. The call trace shows a page fault at\\nmt7925_sta_set_decap_offload() due to accessing resources when msta-\u003evif\\nis NULL.\\n\\nFix this by adding an early return if msta-\u003evif is NULL and also check\\nwcid.sta is ready. This ensures we only proceed with decap offload\\nconfiguration when the station\u0027s state is properly initialized.\\n\\n[14739.655703] Unable to handle kernel paging request at virtual address ffffffffffffffa0\\n[14739.811820] CPU: 0 UID: 0 PID: 895854 Comm: hostapd Tainted: G\\n[14739.821394] Tainted: [C]=CRAP, [O]=OOT_MODULE\\n[14739.825746] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)\\n[14739.831577] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n[14739.838538] pc : mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common]\\n[14739.845271] lr : mt7925_sta_set_decap_offload+0x58/0x1b8 [mt7925_common]\\n[14739.851985] sp : ffffffc085efb500\\n[14739.855295] x29: ffffffc085efb500 x28: 0000000000000000 x27: ffffff807803a158\\n[14739.862436] x26: ffffff8041ececb8 x25: 0000000000000001 x24: 0000000000000001\\n[14739.869577] x23: 0000000000000001 x22: 0000000000000008 x21: ffffff8041ecea88\\n[14739.876715] x20: ffffff8041c19ca0 x19: ffffff8078031fe0 x18: 0000000000000000\\n[14739.883853] x17: 0000000000000000 x16: ffffffe2aeac1110 x15: 000000559da48080\\n[14739.890991] x14: 0000000000000001 x13: 0000000000000000 x12: 0000000000000000\\n[14739.898130] x11: 0a10020001008e88 x10: 0000000000001a50 x9 : ffffffe26457bfa0\\n[14739.905269] x8 : ffffff8042013bb0 x7 : ffffff807fb6cbf8 x6 : dead000000000100\\n[14739.912407] x5 : dead000000000122 x4 : ffffff80780326c8 x3 : 0000000000000000\\n[14739.919546] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffffff8041ececb8\\n[14739.926686] Call trace:\\n[14739.929130]  mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common]\\n[14739.935505]  ieee80211_check_fast_rx+0x19c/0x510 [mac80211]\\n[14739.941344]  _sta_info_move_state+0xe4/0x510 [mac80211]\\n[14739.946860]  sta_info_move_state+0x1c/0x30 [mac80211]\\n[14739.952116]  sta_apply_auth_flags.constprop.0+0x90/0x1b0 [mac80211]\\n[14739.958708]  sta_apply_parameters+0x234/0x5e0 [mac80211]\\n[14739.964332]  ieee80211_add_station+0xdc/0x190 [mac80211]\\n[14739.969950]  nl80211_new_station+0x46c/0x670 [cfg80211]\\n[14739.975516]  genl_family_rcv_msg_doit+0xdc/0x150\\n[14739.980158]  genl_rcv_msg+0x218/0x298\\n[14739.983830]  netlink_rcv_skb+0x64/0x138\\n[14739.987670]  genl_rcv+0x40/0x60\\n[14739.990816]  netlink_unicast+0x314/0x380\\n[14739.994742]  netlink_sendmsg+0x198/0x3f0\\n[14739.998664]  __sock_sendmsg+0x64/0xc0\\n[14740.002324]  ____sys_sendmsg+0x260/0x298\\n[14740.006242]  ___sys_sendmsg+0xb4/0x110\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mt76: mt7925: evitar la desreferencia de puntero nulo en mt7925_sta_set_decap_offload(). Se ha a\u00f1adido una comprobaci\u00f3n nula para msta-\u0026gt;vif antes de acceder a sus miembros para evitar un p\u00e1nico del kernel en la implementaci\u00f3n en modo AP. Esto tambi\u00e9n soluciona el problema reportado en [1]. El fallo se produce cuando esta funci\u00f3n se activa antes de que la estaci\u00f3n se inicialice por completo. El seguimiento de llamadas muestra un fallo de p\u00e1gina en mt7925_sta_set_decap_offload() debido al acceso a recursos cuando msta-\u0026gt;vif es nulo. Para solucionar esto, se a\u00f1ade un retorno anticipado si msta-\u0026gt;vif es nulo y se comprueba que wcid.sta est\u00e9 listo. Esto garantiza que solo procedamos con la configuraci\u00f3n de descarga de decap cuando el estado de la estaci\u00f3n se inicialice correctamente. [14739.655703] Unable to handle kernel paging request at virtual address ffffffffffffffa0 [14739.811820] CPU: 0 UID: 0 PID: 895854 Comm: hostapd Tainted: G [14739.821394] Tainted: [C]=CRAP, [O]=OOT_MODULE [14739.825746] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT) [14739.831577] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [14739.838538] pc : mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common] [14739.845271] lr : mt7925_sta_set_decap_offload+0x58/0x1b8 [mt7925_common] [14739.851985] sp : ffffffc085efb500 [14739.855295] x29: ffffffc085efb500 x28: 0000000000000000 x27: ffffff807803a158 [14739.862436] x26: ffffff8041ececb8 x25: 0000000000000001 x24: 0000000000000001 [14739.869577] x23: 0000000000000001 x22: 0000000000000008 x21: ffffff8041ecea88 [14739.876715] x20: ffffff8041c19ca0 x19: ffffff8078031fe0 x18: 0000000000000000 [14739.883853] x17: 0000000000000000 x16: ffffffe2aeac1110 x15: 000000559da48080 [14739.890991] x14: 0000000000000001 x13: 0000000000000000 x12: 0000000000000000 [14739.898130] x11: 0a10020001008e88 x10: 0000000000001a50 x9 : ffffffe26457bfa0 [14739.905269] x8 : ffffff8042013bb0 x7 : ffffff807fb6cbf8 x6 : dead000000000100 [14739.912407] x5 : dead000000000122 x4 : ffffff80780326c8 x3 : 0000000000000000 [14739.919546] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffffff8041ececb8 [14739.926686] Call trace: [14739.929130] mt7925_sta_set_decap_offload+0xc0/0x1b8 [mt7925_common] [14739.935505] ieee80211_check_fast_rx+0x19c/0x510 [mac80211] [14739.941344] _sta_info_move_state+0xe4/0x510 [mac80211] [14739.946860] sta_info_move_state+0x1c/0x30 [mac80211] [14739.952116] sta_apply_auth_flags.constprop.0+0x90/0x1b0 [mac80211] [14739.958708] sta_apply_parameters+0x234/0x5e0 [mac80211] [14739.964332] ieee80211_add_station+0xdc/0x190 [mac80211] [14739.969950] nl80211_new_station+0x46c/0x670 [cfg80211] [14739.975516] genl_family_rcv_msg_doit+0xdc/0x150 [14739.980158] genl_rcv_msg+0x218/0x298 [14739.983830] netlink_rcv_skb+0x64/0x138 [14739.987670] genl_rcv+0x40/0x60 [14739.990816] netlink_unicast+0x314/0x380 [14739.994742] netlink_sendmsg+0x198/0x3f0 [14739.998664] __sock_sendmsg+0x64/0xc0 [14740.002324] ____sys_sendmsg+0x260/0x298 [14740.006242] ___sys_sendmsg+0xb4/0x110\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/35ad47c0b3da04b00b19a8b9ed5632e2f2520472\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/91c3dec2453b3742e8f666957b99945edc30577f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9b50874f297fcc62adc7396f35209878e51010b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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