{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0871561055e666da421d779397efcc1e5e964cab"
            },
            {
              "fixed": "4b8e527aca357a6488680713bd88007cf8f547fe"
            },
            {
              "fixed": "0bdee4118340c5a756220c1b29a7dab86bb0aa65"
            },
            {
              "fixed": "3a164f640953cc982804746e772d379171aff5c6"
            },
            {
              "fixed": "f67d368d26764a357691b2b3a33d3cb55b435bfc"
            },
            {
              "fixed": "ba2c83167b215da30fa2aae56b140198cf8d8408"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31730.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: possible double-free of cctx-\u003eremote_heap\n\nfastrpc_init_create_static_process() may free cctx-\u003eremote_heap on the\nerr_map path but does not clear the pointer. Later, fastrpc_rpmsg_remove()\nfrees cctx-\u003eremote_heap again if it is non-NULL, which can lead to a\ndouble-free if the INIT_CREATE_STATIC ioctl hits the error path and the rpmsg\ndevice is subsequently removed/unbound.\nClear cctx-\u003eremote_heap after freeing it in the error path to prevent the\nlater cleanup from freeing it again.\n\nThis issue was found by an in-house analysis workflow that extracts AST-based\ninformation and runs static checks, with LLM assistance for triage, and was\nconfirmed by manual code review.\nNo hardware testing was performed.",
  "id": "CVE-2026-31730",
  "modified": "2026-07-08T05:38:30.580592750Z",
  "published": "2026-05-01T14:14:29.522Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bdee4118340c5a756220c1b29a7dab86bb0aa65"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a164f640953cc982804746e772d379171aff5c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b8e527aca357a6488680713bd88007cf8f547fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba2c83167b215da30fa2aae56b140198cf8d8408"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f67d368d26764a357691b2b3a33d3cb55b435bfc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31730.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31730"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "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": "misc: fastrpc: possible double-free of cctx-\u003eremote_heap"
}