{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593"
            },
            {
              "fixed": "b09071e2f8460b35c7d355addad0fc7b31c6904d"
            },
            {
              "fixed": "933df60a465b1b82ff92dcd6870504da90ba4e9b"
            },
            {
              "fixed": "61cc5dac60d50dee06cf5c7b7ab246f9c825a715"
            },
            {
              "fixed": "a18dd388045dc7263d99a07db9de4e0f149ca8f1"
            },
            {
              "fixed": "9f3e9fe1b155e9b4572054d8d140586bc3512ecf"
            },
            {
              "fixed": "d2b5f637b9b67a79a50d42614d10653c13b4e449"
            },
            {
              "fixed": "eaa3a29004c063d7e9d5ea55636f693f67e6db0f"
            },
            {
              "fixed": "0984ebc631792acf8fff105112ee74a6b8f1efcc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.6.0"
            },
            {
              "fixed": "5.10.273"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.224"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.191"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.160"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.57"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99056.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstrparser: make sure __strp_recv isn't running before tearing down the parser\n\nThe comment above strp_done() claims that if strp is stopped,\nstrp_recv will no longer be called. That's only true if the caller has\na mechanism (eg locking) to guarantee that strp_recv() calls that\nstarted before strp_stop() have completed by the time we call\nstrp_done().\n\nThis adds a dummy lock_sock/release_sock pair to guarantee that any\nin-flight strp_recv() (which runs under either bh_lock_sock or\nlock_sock, depending if it's called from -\u003esk_data_ready or strp_work)\nhas completed.\n\nOnly espintcp can be affected by this race condition, but this patch\nmakes sure no future user of strp can have the bug.\n\nThis could crash on strp-\u003esk (\"general mode\" of strp), but this mode\nhas been here for 9 years and has never been used. It'll be gone soon,\nno point worrying about it.\n\nSwitch the stopped/paused/etc bits to u8's to avoid races between\nstrp_stop() and strp_pause/unpause().\n\nA reproducer has been published and turns the possible UAF into an\nexploit [1].",
  "id": "CVE-2026-99056",
  "modified": "2026-11-01T02:30:58.437333292Z",
  "published": "2026-10-23T12:22:42.234Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0984ebc631792acf8fff105112ee74a6b8f1efcc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61cc5dac60d50dee06cf5c7b7ab246f9c825a715"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/933df60a465b1b82ff92dcd6870504da90ba4e9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f3e9fe1b155e9b4572054d8d140586bc3512ecf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a18dd388045dc7263d99a07db9de4e0f149ca8f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b09071e2f8460b35c7d355addad0fc7b31c6904d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2b5f637b9b67a79a50d42614d10653c13b4e449"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eaa3a29004c063d7e9d5ea55636f693f67e6db0f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99056.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99056"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "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": "strparser: make sure __strp_recv isn't running before tearing down the parser"
}