wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds

{
  "id": "cdce7bfcdbc95e25fb1cdca1e4ddfe4ca630e34fd8c30002a69635ee42b6b0aa",
  "url": "https://osv.dev/vulnerability/CVE-2023-53582",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds Fix a stack-out-of-bounds read in brcmfmac that occurs when 'buf' that is not null-terminated is passed as an argument of strreplace() in brcmf_c_preinit_dcmds(). This buffer is filled with a CLM version string by memcpy() in brcmf_fil_iovar_data_get(). Ensure buf is null-terminated. Found by a modified version of syzkaller. [ 33.004414][ T1896] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available [ 33.013486][ T1896] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43236/3 wl0: Nov 30 2011 17:33:42 version 5.90.188.22 [ 33.021554][ T1896] ================================================================== [ 33.022379][ T1896] BUG: KASAN: stack-out-of-bounds in strreplace+0xf2/0x110 [ 33.023122][ T1896] Read of size 1 at addr ffffc90001d6efc8 by task kworker/0:2/1896 [ 33.023852][ T1896] [ 33.024096][ T1896] CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G O 5.14.0+ #132 [ 33.024927][ T1896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 33.026065][ T1896] Workqueue: usb_hub_wq hub_event [ 33.026581][ T1896] Call Trace: [ 33.026896][ T1896] dump_stack_lvl+0x57/0x7d [ 33.027372][ T1896] print_address_description.constprop.0.cold+0xf/0x334 [ 33.028037][ T1896] ? strreplace+0xf2/0x110 [ 33.028403][ T1896] ? s",
    "evidence": "osv:CVE-2023-53582",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.19.276",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.235",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.173",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.99",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53582",
      "aliases": [
        "CVE-2023-53582"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fdd0bd88ceaecf729db103ac8836af5805dd2dc1"
                },
                {
                  "fixed": "3b173b4ad9c001a555f44adc7836d6fe3afbe9ec"
                },
                {
                  "fixed": "423a1297ea72bbddf64dbb0957f2879c0f2aa5d0"
                },
                {
                  "fixed": "0ca2efea4f11c6255061e852ac188264c469c197"
                },
                {
                  "fixed": "a0f0ce1c8ab9fe90618dc394e3d1568b5a9ac154"
                },
                {
                  "fixed": "ecb980dc79709c02f579a9c03cb92ccec189ab38"
                },
                {
                  "fixed": "c02f733024d70105f22de8dd0a1252a0350cd516"
                },
                {
                  "fixed": "660145d708be52f946a82e5b633c020f58f996de"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53582.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.15.0"
                },
                {
                  "fixed": "4.19.276"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.20.0"
                },
                {
                  "fixed": "5.4.235"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.173"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.99"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53582.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.302909089Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0ca2efea4f11c6255061e852ac188264c469c197",
        "https://git.kernel.org/stable/c/3b173b4ad9c001a555f44adc7836d6fe3afbe9ec",
        "https://git.kernel.org/stable/c/423a1297ea72bbddf64dbb0957f2879c0f2aa5d0",
        "https://git.kernel.org/stable/c/660145d708be52f946a82e5b633c020f58f996de",
        "https://git.kernel.org/stable/c/a0f0ce1c8ab9fe90618dc394e3d1568b5a9ac154",
        "https://git.kernel.org/stable/c/c02f733024d70105f22de8dd0a1252a0350cd516",
        "https://git.kernel.org/stable/c/ecb980dc79709c02f579a9c03cb92ccec189ab38",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53582.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53582",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53582.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53582",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 522007,
  "published_at": "2025-10-04T15:43:58.493+00:00"
}