{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ded845a781a578dfb0b5b2c138e5a067aa3b1242"
            },
            {
              "fixed": "460c5cd51e4d7d15b317f178f42cfcb666c0fe91"
            },
            {
              "fixed": "b07aea90dbc6e188c74c100af64b77b9482ffc65"
            },
            {
              "fixed": "fe90605b651573d30be8293ff5be40e3d7023117"
            },
            {
              "fixed": "b9071dc7889bef42590e04fbf3e56cc65e1e5e6e"
            },
            {
              "fixed": "d4a397fe803c2d157f6ebb068b802ef75fbf109e"
            },
            {
              "fixed": "cb5cca1d2a908ddd5e357971de0f2009617b8d6a"
            },
            {
              "fixed": "7e3630fbb6aabb844bbf35746dee0bf3894100c7"
            },
            {
              "fixed": "e09390e439bd7cca30dd10893b1f64802961667a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.12.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72048.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: ca8210: fix cas_ctl leak on spi_async failure\n\nca8210_spi_transfer() allocates cas_ctl with kzalloc_obj(GFP_ATOMIC)\nand relies entirely on the SPI completion callback\nca8210_spi_transfer_complete() to free it.\n\nThe spi_async() API only invokes the completion callback on successful\nsubmission.  On failure it returns a negative error code without ever\nqueuing the callback, which leaves cas_ctl and its embedded spi_message\nand spi_transfer orphaned.  Every kfree(cas_ctl) in the driver is\ninside the completion callback, so there is no other reclamation path.\n\nca8210_spi_transfer() is called from ca8210_spi_exchange(), the\ninterrupt handler ca8210_interrupt_handler(), and from the retry path\ninside the completion callback itself.  The exchange and interrupt\nhandler paths loop on -EBUSY, so under sustained SPI bus contention\nevery retry iteration leaks a fresh cas_ctl (~600 bytes per\noccurrence).\n\nFix it by freeing cas_ctl on the spi_async() error path.  While here,\ncorrect the misleading error string: the function calls spi_async(),\nnot spi_sync().",
  "id": "CVE-2026-72048",
  "modified": "2026-08-18T03:30:50.485916217Z",
  "published": "2026-08-15T05:52:06.253Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/460c5cd51e4d7d15b317f178f42cfcb666c0fe91"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e3630fbb6aabb844bbf35746dee0bf3894100c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b07aea90dbc6e188c74c100af64b77b9482ffc65"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9071dc7889bef42590e04fbf3e56cc65e1e5e6e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb5cca1d2a908ddd5e357971de0f2009617b8d6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d4a397fe803c2d157f6ebb068b802ef75fbf109e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e09390e439bd7cca30dd10893b1f64802961667a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe90605b651573d30be8293ff5be40e3d7023117"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72048.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72048"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ieee802154: ca8210: fix cas_ctl leak on spi_async failure"
}