{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e"
            },
            {
              "fixed": "3b2b6c42070ce4204936288253baf101e995c2d3"
            },
            {
              "fixed": "b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7"
            },
            {
              "fixed": "a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6"
            },
            {
              "fixed": "655c9ba9915f05266998dbbf4b76b3c79b8a70aa"
            },
            {
              "fixed": "e464e26b2457005c87e158570498274b9f3b90c7"
            },
            {
              "fixed": "c20f925214249bb4fc04f7e197bea142a6438af6"
            },
            {
              "fixed": "a2d4e9a76de0b2178001214ba5de5bf94a7354aa"
            },
            {
              "fixed": "dd2fdc3504592d85e549c523b054898a036a6afe"
            }
          ],
          "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": "5.10.252"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.14"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45964.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: fix gss_auth kref leak in gss_alloc_msg error path\n\nCommit 5940d1cf9f42 (\"SUNRPC: Rebalance a kref in auth_gss.c\") added\na kref_get(\u0026gss_auth-\u003ekref) call to balance the gss_put_auth() done\nin gss_release_msg(), but forgot to add a corresponding kref_put()\non the error path when kstrdup_const() fails.\n\nIf service_name is non-NULL and kstrdup_const() fails, the function\njumps to err_put_pipe_version which calls put_pipe_version() and\nkfree(gss_msg), but never releases the gss_auth reference. This leads\nto a kref leak where the gss_auth structure is never freed.\n\nAdd a forward declaration for gss_free_callback() and call kref_put()\nin the err_put_pipe_version error path to properly release the\nreference taken earlier.",
  "id": "CVE-2026-45964",
  "modified": "2026-07-15T01:48:58.239722799Z",
  "published": "2026-05-27T12:18:22.052Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b2b6c42070ce4204936288253baf101e995c2d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/655c9ba9915f05266998dbbf4b76b3c79b8a70aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2d4e9a76de0b2178001214ba5de5bf94a7354aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c20f925214249bb4fc04f7e197bea142a6438af6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd2fdc3504592d85e549c523b054898a036a6afe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e464e26b2457005c87e158570498274b9f3b90c7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45964.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45964"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path"
}