{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "514ac99c64b22d83b52dfee3b8becaa69a92bc4a"
            },
            {
              "fixed": "1de30576a6dfeaaa27ef91fa272e6b9240b6fbd3"
            },
            {
              "fixed": "64c8553decf5a5f2417bd54761ea0a832c56c4ca"
            },
            {
              "fixed": "3f43f12fde34737fba091b7e3ab391e14ddbb0be"
            },
            {
              "fixed": "5e9cfffad898bbeaafd0ea608a6d267362f050fc"
            },
            {
              "fixed": "572f0bf536ebc14f6e7da3d21a85cf076de8358e"
            },
            {
              "fixed": "1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0"
            },
            {
              "fixed": "7201a531b9a5ed892bfda5ded9194ef622de8ffa"
            },
            {
              "fixed": "34c1741254ff972e8375faf176678a248826fe3a"
            },
            {
              "fixed": "a535a9217ca3f2fccedaafb2fddb4c48f27d36dc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.1.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.136"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.83"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.24"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.20.0"
            },
            {
              "fixed": "7.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31532.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: raw: fix ro-\u003euniq use-after-free in raw_rcv()\n\nraw_release() unregisters raw CAN receive filters via can_rx_unregister(),\nbut receiver deletion is deferred with call_rcu(). This leaves a window\nwhere raw_rcv() may still be running in an RCU read-side critical section\nafter raw_release() frees ro-\u003euniq, leading to a use-after-free of the\npercpu uniq storage.\n\nMove free_percpu(ro-\u003euniq) out of raw_release() and into a raw-specific\nsocket destructor. can_rx_unregister() takes an extra reference to the\nsocket and only drops it from the RCU callback, so freeing uniq from\nsk_destruct ensures the percpu area is not released until the relevant\ncallbacks have drained.\n\n[mkl: applied manually]",
  "id": "CVE-2026-31532",
  "modified": "2026-08-12T03:51:43.327233840Z",
  "published": "2026-04-23T11:12:44.829Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1de30576a6dfeaaa27ef91fa272e6b9240b6fbd3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34c1741254ff972e8375faf176678a248826fe3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f43f12fde34737fba091b7e3ab391e14ddbb0be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/572f0bf536ebc14f6e7da3d21a85cf076de8358e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e9cfffad898bbeaafd0ea608a6d267362f050fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64c8553decf5a5f2417bd54761ea0a832c56c4ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7201a531b9a5ed892bfda5ded9194ef622de8ffa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a535a9217ca3f2fccedaafb2fddb4c48f27d36dc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31532.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31532"
    },
    {
      "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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "can: raw: fix ro-\u003euniq use-after-free in raw_rcv()"
}