{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4684997d9eea29380000e062755aa6d368d789a3"
            },
            {
              "fixed": "81c58a206d1deee01f4c29236d4154c0872f2a38"
            },
            {
              "fixed": "382ee00b2d1e31869ae576a60d3fbe7a2153512f"
            },
            {
              "fixed": "739b686aecdb14a6065300ea53401f043e51fd22"
            },
            {
              "fixed": "b7d1d8cb1bdca56aecebacd2896615da0acc126a"
            },
            {
              "fixed": "5a045c2f0fbf029873d2295178fa0785ade35af0"
            },
            {
              "fixed": "044fca8f45ba9ab6ca526163155234cf88287ff5"
            },
            {
              "fixed": "0ca80328df23f851c86866720d4977783c919ee6"
            },
            {
              "fixed": "538c51e9d124cf656f2dd0c0394a8545efc7102d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.2.0"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68192.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: make release_scratchbuffers idempotent\n\nbrcmf_pcie_release_scratchbuffers() frees the shared.scratch and\nshared.ringupd DMA buffers with dma_free_coherent() but does not clear\nthe pointers afterwards, unlike the sibling release_ringbuffers() which\nNULLs commonrings/flowrings/idxbuf on release.\n\nBoth the bus_reset .reset callback (brcmf_pcie_reset) and\nbrcmf_pcie_remove() call release_scratchbuffers.  When reset teardown\nhas run before removal, remove's own teardown would call\ndma_free_coherent() a second time on the already-freed DMA allocation.\n\nNULL the pointers after free, matching release_ringbuffers(), so a later\nrelease observes that the allocation has already been released.  This\npatch makes repeated sequential release safe; the reset-work lifetime is\nhandled separately by the following patch.\n\nThis issue was found by an in-house static analysis tool.",
  "id": "CVE-2026-68192",
  "modified": "2026-08-21T03:30:29.106665439Z",
  "published": "2026-08-10T12:00:10.041Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/044fca8f45ba9ab6ca526163155234cf88287ff5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ca80328df23f851c86866720d4977783c919ee6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/382ee00b2d1e31869ae576a60d3fbe7a2153512f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/538c51e9d124cf656f2dd0c0394a8545efc7102d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a045c2f0fbf029873d2295178fa0785ade35af0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/739b686aecdb14a6065300ea53401f043e51fd22"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81c58a206d1deee01f4c29236d4154c0872f2a38"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7d1d8cb1bdca56aecebacd2896615da0acc126a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68192.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68192"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wifi: brcmfmac: make release_scratchbuffers idempotent"
}