{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "80367ad01d93ac781b0e1df246edaf006928002f"
            },
            {
              "fixed": "fdf538b2e69653ff740e84042245018e5680cd7b"
            },
            {
              "fixed": "0478bc6bf197629fea0331d65b39eeea043c6cf0"
            },
            {
              "fixed": "d7944cee62ec6cca1c90780a766960a57d3b4bb8"
            },
            {
              "fixed": "c5f0bc9fd1cec4a00400cc727fcde03e0fde17cc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.47"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.11"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80777.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfutex/pi: Plug private futex exec() race\n\nThe check for private futexes whether the waiter's mm, which is stored in\nthe futex_key and copied into the pi_state, is the same as the owner's mm\nis not sufficient for exec(). exec() has a gap where the mm check fails to\ngive the correct answer:\n\n  exec()\n  ...\n    exec_release_mm()\n      futex_exec_release()\n        tsk::futex::exit_state = EXITING;\n        cleanup_robust_list();\n1)      tsk::futex::exit_state = OK;\n    ...\n    old_mm = tsk::mm;\n2)  tsk::mm = -\u003emm;\n\nBetween #1 and #2 the check for the mm is wrong as that mm is about to be\nswapped out and eventually freed.\n\nPlug this gap by:\n\n  1) Setting tsk::futex::exit_state to FUTEX_STATE_DEAD in\n     futex_exec_release()\n\n  2) Setting tsk::futex::exit_state to FUTEX_STATE_OK after\n     the mm has been switched.\n\nFrom a futex point of view the task is dead after it finished the robust\nlist cleanup up to the point where it sets the state to OK again.",
  "id": "CVE-2026-80777",
  "modified": "2026-09-06T03:30:51.556511022Z",
  "published": "2026-09-04T15:12:49.215Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0478bc6bf197629fea0331d65b39eeea043c6cf0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5f0bc9fd1cec4a00400cc727fcde03e0fde17cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7944cee62ec6cca1c90780a766960a57d3b4bb8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fdf538b2e69653ff740e84042245018e5680cd7b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80777.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80777"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "futex/pi: Plug private futex exec() race"
}