CVE-2022-50258 (GCVE-0-2022-50258)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:02 – Updated: 2026-05-11 19:15
VLAI
Title
wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds() This patch fixes a stack-out-of-bounds read in brcmfmac that occurs when 'buf' that is not null-terminated is passed as an argument of strsep() in brcmf_c_preinit_dcmds(). This buffer is filled with a firmware version string by memcpy() in brcmf_fil_iovar_data_get(). The patch ensures buf is null-terminated. Found by a modified version of syzkaller. [ 47.569679][ T1897] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43236b for chip BCM43236/3 [ 47.582839][ T1897] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available [ 47.601565][ T1897] ================================================================== [ 47.602574][ T1897] BUG: KASAN: stack-out-of-bounds in strsep+0x1b2/0x1f0 [ 47.603447][ T1897] Read of size 1 at addr ffffc90001f6f000 by task kworker/0:2/1897 [ 47.604336][ T1897] [ 47.604621][ T1897] CPU: 0 PID: 1897 Comm: kworker/0:2 Tainted: G O 5.14.0+ #131 [ 47.605617][ T1897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 47.606907][ T1897] Workqueue: usb_hub_wq hub_event [ 47.607453][ T1897] Call Trace: [ 47.607801][ T1897] dump_stack_lvl+0x8e/0xd1 [ 47.608295][ T1897] print_address_description.constprop.0.cold+0xf/0x334 [ 47.609009][ T1897] ? strsep+0x1b2/0x1f0 [ 47.609434][ T1897] ? strsep+0x1b2/0x1f0 [ 47.609863][ T1897] kasan_report.cold+0x83/0xdf [ 47.610366][ T1897] ? strsep+0x1b2/0x1f0 [ 47.610882][ T1897] strsep+0x1b2/0x1f0 [ 47.611300][ T1897] ? brcmf_fil_iovar_data_get+0x3a/0xf0 [ 47.611883][ T1897] brcmf_c_preinit_dcmds+0x995/0xc40 [ 47.612434][ T1897] ? brcmf_c_set_joinpref_default+0x100/0x100 [ 47.613078][ T1897] ? rcu_read_lock_sched_held+0xa1/0xd0 [ 47.613662][ T1897] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 47.614208][ T1897] ? lock_acquire+0x19d/0x4e0 [ 47.614704][ T1897] ? find_held_lock+0x2d/0x110 [ 47.615236][ T1897] ? brcmf_usb_deq+0x1a7/0x260 [ 47.615741][ T1897] ? brcmf_usb_rx_fill_all+0x5a/0xf0 [ 47.616288][ T1897] brcmf_attach+0x246/0xd40 [ 47.616758][ T1897] ? wiphy_new_nm+0x1703/0x1dd0 [ 47.617280][ T1897] ? kmemdup+0x43/0x50 [ 47.617720][ T1897] brcmf_usb_probe+0x12de/0x1690 [ 47.618244][ T1897] ? brcmf_usbdev_qinit.constprop.0+0x470/0x470 [ 47.618901][ T1897] usb_probe_interface+0x2aa/0x760 [ 47.619429][ T1897] ? usb_probe_device+0x250/0x250 [ 47.619950][ T1897] really_probe+0x205/0xb70 [ 47.620435][ T1897] ? driver_allows_async_probing+0x130/0x130 [ 47.621048][ T1897] __driver_probe_device+0x311/0x4b0 [ 47.621595][ T1897] ? driver_allows_async_probing+0x130/0x130 [ 47.622209][ T1897] driver_probe_device+0x4e/0x150 [ 47.622739][ T1897] __device_attach_driver+0x1cc/0x2a0 [ 47.623287][ T1897] bus_for_each_drv+0x156/0x1d0 [ 47.623796][ T1897] ? bus_rescan_devices+0x30/0x30 [ 47.624309][ T1897] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 47.624907][ T1897] ? trace_hardirqs_on+0x46/0x160 [ 47.625437][ T1897] __device_attach+0x23f/0x3a0 [ 47.625924][ T1897] ? device_bind_driver+0xd0/0xd0 [ 47.626433][ T1897] ? kobject_uevent_env+0x287/0x14b0 [ 47.627057][ T1897] bus_probe_device+0x1da/0x290 [ 47.627557][ T1897] device_add+0xb7b/0x1eb0 [ 47.628027][ T1897] ? wait_for_completion+0x290/0x290 [ 47.628593][ T1897] ? __fw_devlink_link_to_suppliers+0x5a0/0x5a0 [ 47.629249][ T1897] usb_set_configuration+0xf59/0x16f0 [ 47.629829][ T1897] usb_generic_driver_probe+0x82/0xa0 [ 47.630385][ T1897] usb_probe_device+0xbb/0x250 [ 47.630927][ T1897] ? usb_suspend+0x590/0x590 [ 47.631397][ T1897] really_probe+0x205/0xb70 [ 47.631855][ T1897] ? driver_allows_async_probing+0x130/0x130 [ 47.632469][ T1897] __driver_probe_device+0x311/0x4b0 [ 47.633002][ ---truncated---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6667 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < 89243a7b0ea19606ba1c2873c9d569026ccb344f (git)
Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < d481fd6064bf215d7c5068e15aa390c3b16c9cd0 (git)
Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < 17dbe90e13f52848c460d253f15b765038ec6dc0 (git)
Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < d6ef66194bb4a6c18f5b9649bf62597909b040e4 (git)
Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < 3a3a5e3f94068cd562d62a57da6983c8cd07d53c (git)
Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < 881f50d76c3892262730ddf5c894eb00310e736c (git)
Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < ba166e0ebdde3dfa833f0a3edaf2b2934d4a87f7 (git)
Affected: 0af29bf7c1ddf5f3c35577409de46ede5e8d7845 , < 0a06cadcc2a0044e4a117cc0e61436fc3a0dad69 (git)
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Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 4.14.308 , ≤ 4.14.* (semver)
Unaffected: 4.19.276 , ≤ 4.19.* (semver)
Unaffected: 5.4.235 , ≤ 5.4.* (semver)
Unaffected: 5.10.173 , ≤ 5.10.* (semver)
Unaffected: 5.15.99 , ≤ 5.15.* (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c"
          ],
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              "status": "affected",
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          "defaultStatus": "affected",
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.308",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.276",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.308",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.276",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.235",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.173",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.99",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.16",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.3",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()\n\nThis patch fixes a stack-out-of-bounds read in brcmfmac that occurs\nwhen \u0027buf\u0027 that is not null-terminated is passed as an argument of\nstrsep() in brcmf_c_preinit_dcmds(). This buffer is filled with a firmware\nversion string by memcpy() in brcmf_fil_iovar_data_get().\nThe patch ensures buf is null-terminated.\n\nFound by a modified version of syzkaller.\n\n[   47.569679][ T1897] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43236b for chip BCM43236/3\n[   47.582839][ T1897] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available\n[   47.601565][ T1897] ==================================================================\n[   47.602574][ T1897] BUG: KASAN: stack-out-of-bounds in strsep+0x1b2/0x1f0\n[   47.603447][ T1897] Read of size 1 at addr ffffc90001f6f000 by task kworker/0:2/1897\n[   47.604336][ T1897]\n[   47.604621][ T1897] CPU: 0 PID: 1897 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #131\n[   47.605617][ T1897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014\n[   47.606907][ T1897] Workqueue: usb_hub_wq hub_event\n[   47.607453][ T1897] Call Trace:\n[   47.607801][ T1897]  dump_stack_lvl+0x8e/0xd1\n[   47.608295][ T1897]  print_address_description.constprop.0.cold+0xf/0x334\n[   47.609009][ T1897]  ? strsep+0x1b2/0x1f0\n[   47.609434][ T1897]  ? strsep+0x1b2/0x1f0\n[   47.609863][ T1897]  kasan_report.cold+0x83/0xdf\n[   47.610366][ T1897]  ? strsep+0x1b2/0x1f0\n[   47.610882][ T1897]  strsep+0x1b2/0x1f0\n[   47.611300][ T1897]  ? brcmf_fil_iovar_data_get+0x3a/0xf0\n[   47.611883][ T1897]  brcmf_c_preinit_dcmds+0x995/0xc40\n[   47.612434][ T1897]  ? brcmf_c_set_joinpref_default+0x100/0x100\n[   47.613078][ T1897]  ? rcu_read_lock_sched_held+0xa1/0xd0\n[   47.613662][ T1897]  ? rcu_read_lock_bh_held+0xb0/0xb0\n[   47.614208][ T1897]  ? lock_acquire+0x19d/0x4e0\n[   47.614704][ T1897]  ? find_held_lock+0x2d/0x110\n[   47.615236][ T1897]  ? brcmf_usb_deq+0x1a7/0x260\n[   47.615741][ T1897]  ? brcmf_usb_rx_fill_all+0x5a/0xf0\n[   47.616288][ T1897]  brcmf_attach+0x246/0xd40\n[   47.616758][ T1897]  ? wiphy_new_nm+0x1703/0x1dd0\n[   47.617280][ T1897]  ? kmemdup+0x43/0x50\n[   47.617720][ T1897]  brcmf_usb_probe+0x12de/0x1690\n[   47.618244][ T1897]  ? brcmf_usbdev_qinit.constprop.0+0x470/0x470\n[   47.618901][ T1897]  usb_probe_interface+0x2aa/0x760\n[   47.619429][ T1897]  ? usb_probe_device+0x250/0x250\n[   47.619950][ T1897]  really_probe+0x205/0xb70\n[   47.620435][ T1897]  ? driver_allows_async_probing+0x130/0x130\n[   47.621048][ T1897]  __driver_probe_device+0x311/0x4b0\n[   47.621595][ T1897]  ? driver_allows_async_probing+0x130/0x130\n[   47.622209][ T1897]  driver_probe_device+0x4e/0x150\n[   47.622739][ T1897]  __device_attach_driver+0x1cc/0x2a0\n[   47.623287][ T1897]  bus_for_each_drv+0x156/0x1d0\n[   47.623796][ T1897]  ? bus_rescan_devices+0x30/0x30\n[   47.624309][ T1897]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n[   47.624907][ T1897]  ? trace_hardirqs_on+0x46/0x160\n[   47.625437][ T1897]  __device_attach+0x23f/0x3a0\n[   47.625924][ T1897]  ? device_bind_driver+0xd0/0xd0\n[   47.626433][ T1897]  ? kobject_uevent_env+0x287/0x14b0\n[   47.627057][ T1897]  bus_probe_device+0x1da/0x290\n[   47.627557][ T1897]  device_add+0xb7b/0x1eb0\n[   47.628027][ T1897]  ? wait_for_completion+0x290/0x290\n[   47.628593][ T1897]  ? __fw_devlink_link_to_suppliers+0x5a0/0x5a0\n[   47.629249][ T1897]  usb_set_configuration+0xf59/0x16f0\n[   47.629829][ T1897]  usb_generic_driver_probe+0x82/0xa0\n[   47.630385][ T1897]  usb_probe_device+0xbb/0x250\n[   47.630927][ T1897]  ? usb_suspend+0x590/0x590\n[   47.631397][ T1897]  really_probe+0x205/0xb70\n[   47.631855][ T1897]  ? driver_allows_async_probing+0x130/0x130\n[   47.632469][ T1897]  __driver_probe_device+0x311/0x4b0\n[   47.633002][ \n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:15:50.478Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/89243a7b0ea19606ba1c2873c9d569026ccb344f"
        },
        {
          "url": "https://git.kernel.org/stable/c/d481fd6064bf215d7c5068e15aa390c3b16c9cd0"
        },
        {
          "url": "https://git.kernel.org/stable/c/17dbe90e13f52848c460d253f15b765038ec6dc0"
        },
        {
          "url": "https://git.kernel.org/stable/c/d6ef66194bb4a6c18f5b9649bf62597909b040e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/3a3a5e3f94068cd562d62a57da6983c8cd07d53c"
        },
        {
          "url": "https://git.kernel.org/stable/c/881f50d76c3892262730ddf5c894eb00310e736c"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba166e0ebdde3dfa833f0a3edaf2b2934d4a87f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/0a06cadcc2a0044e4a117cc0e61436fc3a0dad69"
        }
      ],
      "title": "wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50258",
    "datePublished": "2025-09-15T14:02:43.992Z",
    "dateReserved": "2025-09-15T13:58:00.974Z",
    "dateUpdated": "2026-05-11T19:15:50.478Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50258",
      "date": "2026-10-15",
      "epss": "0.00168",
      "percentile": "0.05725"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "89243a7b0ea19606ba1c2873c9d569026ccb344f",
                    "status": "affected",
                    "version": "0af29bf7c1ddf5f3c35577409de46ede5e8d7845",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "d481fd6064bf215d7c5068e15aa390c3b16c9cd0",
                    "status": "affected",
                    "version": "0af29bf7c1ddf5f3c35577409de46ede5e8d7845",
                    "versionType": "git"
                  },
                  {
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                    "versionType": "git"
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                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.8"
                  },
                  {
                    "lessThan": "3.8",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.14.*",
                    "status": "unaffected",
                    "version": "4.14.308",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.276",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.235",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.173",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.99",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.16",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.2.*",
                    "status": "unaffected",
                    "version": "6.2.3",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.3",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C56CFB26-8D6C-4A3D-99C5-DA43FA59DB77",
                    "versionEndExcluding": "4.14.308",
                    "vulnerable": true
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                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C902FC54-DDBD-4DA6-BFEF-26889A267464",
                    "versionEndExcluding": "4.19.276",
                    "versionStartIncluding": "4.15",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "13DD5E68-8CB4-46EE-9A8F-C7F6C1A84430",
                    "versionEndExcluding": "5.4.235",
                    "versionStartIncluding": "4.20",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "4D810CFB-B7C5-493C-B98A-0D5F0D8A47B6",
                    "versionEndExcluding": "5.10.173",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5B8B2AC9-2F31-4A0F-96F5-7E26B50B27BB",
                    "versionEndExcluding": "5.15.99",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0FD95FDA-6525-4B13-B3FB-49D9995FD8ED",
                    "versionEndExcluding": "6.1.16",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "88C67289-22AD-4CA9-B202-5F5A80E5BA4B",
                    "versionEndExcluding": "6.2.3",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
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            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()\n\nThis patch fixes a stack-out-of-bounds read in brcmfmac that occurs\nwhen \u0027buf\u0027 that is not null-terminated is passed as an argument of\nstrsep() in brcmf_c_preinit_dcmds(). This buffer is filled with a firmware\nversion string by memcpy() in brcmf_fil_iovar_data_get().\nThe patch ensures buf is null-terminated.\n\nFound by a modified version of syzkaller.\n\n[   47.569679][ T1897] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43236b for chip BCM43236/3\n[   47.582839][ T1897] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available\n[   47.601565][ T1897] ==================================================================\n[   47.602574][ T1897] BUG: KASAN: stack-out-of-bounds in strsep+0x1b2/0x1f0\n[   47.603447][ T1897] Read of size 1 at addr ffffc90001f6f000 by task kworker/0:2/1897\n[   47.604336][ T1897]\n[   47.604621][ T1897] CPU: 0 PID: 1897 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #131\n[   47.605617][ T1897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014\n[   47.606907][ T1897] Workqueue: usb_hub_wq hub_event\n[   47.607453][ T1897] Call Trace:\n[   47.607801][ T1897]  dump_stack_lvl+0x8e/0xd1\n[   47.608295][ T1897]  print_address_description.constprop.0.cold+0xf/0x334\n[   47.609009][ T1897]  ? strsep+0x1b2/0x1f0\n[   47.609434][ T1897]  ? strsep+0x1b2/0x1f0\n[   47.609863][ T1897]  kasan_report.cold+0x83/0xdf\n[   47.610366][ T1897]  ? strsep+0x1b2/0x1f0\n[   47.610882][ T1897]  strsep+0x1b2/0x1f0\n[   47.611300][ T1897]  ? brcmf_fil_iovar_data_get+0x3a/0xf0\n[   47.611883][ T1897]  brcmf_c_preinit_dcmds+0x995/0xc40\n[   47.612434][ T1897]  ? brcmf_c_set_joinpref_default+0x100/0x100\n[   47.613078][ T1897]  ? rcu_read_lock_sched_held+0xa1/0xd0\n[   47.613662][ T1897]  ? rcu_read_lock_bh_held+0xb0/0xb0\n[   47.614208][ T1897]  ? lock_acquire+0x19d/0x4e0\n[   47.614704][ T1897]  ? find_held_lock+0x2d/0x110\n[   47.615236][ T1897]  ? brcmf_usb_deq+0x1a7/0x260\n[   47.615741][ T1897]  ? brcmf_usb_rx_fill_all+0x5a/0xf0\n[   47.616288][ T1897]  brcmf_attach+0x246/0xd40\n[   47.616758][ T1897]  ? wiphy_new_nm+0x1703/0x1dd0\n[   47.617280][ T1897]  ? kmemdup+0x43/0x50\n[   47.617720][ T1897]  brcmf_usb_probe+0x12de/0x1690\n[   47.618244][ T1897]  ? brcmf_usbdev_qinit.constprop.0+0x470/0x470\n[   47.618901][ T1897]  usb_probe_interface+0x2aa/0x760\n[   47.619429][ T1897]  ? usb_probe_device+0x250/0x250\n[   47.619950][ T1897]  really_probe+0x205/0xb70\n[   47.620435][ T1897]  ? driver_allows_async_probing+0x130/0x130\n[   47.621048][ T1897]  __driver_probe_device+0x311/0x4b0\n[   47.621595][ T1897]  ? driver_allows_async_probing+0x130/0x130\n[   47.622209][ T1897]  driver_probe_device+0x4e/0x150\n[   47.622739][ T1897]  __device_attach_driver+0x1cc/0x2a0\n[   47.623287][ T1897]  bus_for_each_drv+0x156/0x1d0\n[   47.623796][ T1897]  ? bus_rescan_devices+0x30/0x30\n[   47.624309][ T1897]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n[   47.624907][ T1897]  ? trace_hardirqs_on+0x46/0x160\n[   47.625437][ T1897]  __device_attach+0x23f/0x3a0\n[   47.625924][ T1897]  ? device_bind_driver+0xd0/0xd0\n[   47.626433][ T1897]  ? kobject_uevent_env+0x287/0x14b0\n[   47.627057][ T1897]  bus_probe_device+0x1da/0x290\n[   47.627557][ T1897]  device_add+0xb7b/0x1eb0\n[   47.628027][ T1897]  ? wait_for_completion+0x290/0x290\n[   47.628593][ T1897]  ? __fw_devlink_link_to_suppliers+0x5a0/0x5a0\n[   47.629249][ T1897]  usb_set_configuration+0xf59/0x16f0\n[   47.629829][ T1897]  usb_generic_driver_probe+0x82/0xa0\n[   47.630385][ T1897]  usb_probe_device+0xbb/0x250\n[   47.630927][ T1897]  ? usb_suspend+0x590/0x590\n[   47.631397][ T1897]  really_probe+0x205/0xb70\n[   47.631855][ T1897]  ? driver_allows_async_probing+0x130/0x130\n[   47.632469][ T1897]  __driver_probe_device+0x311/0x4b0\n[   47.633002][ \n---truncated---"
          }
        ],
        "id": "CVE-2022-50258",
        "lastModified": "2026-06-17T05:23:05.627",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-09-15T14:15:36.617",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/0a06cadcc2a0044e4a117cc0e61436fc3a0dad69"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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            "url": "https://git.kernel.org/stable/c/17dbe90e13f52848c460d253f15b765038ec6dc0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3a3a5e3f94068cd562d62a57da6983c8cd07d53c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/881f50d76c3892262730ddf5c894eb00310e736c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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            "url": "https://git.kernel.org/stable/c/89243a7b0ea19606ba1c2873c9d569026ccb344f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ba166e0ebdde3dfa833f0a3edaf2b2934d4a87f7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d481fd6064bf215d7c5068e15aa390c3b16c9cd0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d6ef66194bb4a6c18f5b9649bf62597909b040e4"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-21T18:45:01+00:00",
      "cve": "CVE-2022-50258",
      "id": "CVE-2022-50258",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "120",
      "product_status:known_affected": "152",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50258.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-10-12T00:41:48Z",
      "cve": "CVE-2022-50258",
      "id": "CVE-2022-50258",
      "initial_release_date": "2025-09-17T23:31:39Z",
      "product_status:known_affected": "489",
      "product_status:known_not_affected": "178",
      "product_status:recommended": "400",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50258",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50258.json",
      "version": "53"
    }
  }
}



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