{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-99230",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.402Z",
        "datePublished": "2026-11-02T16:06:37.984Z",
        "dateUpdated": "2026-11-06T17:15:11.543Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-11-06T17:15:11.543Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/cmd: don't leave list poison in ->hash_node\n\nio_uring_cmd_del_cancelable() uses hlist_del() to take a command off\n->cancelable_uring_cmd, which leaves LIST_POISON1/2 behind in\n->hash_node. Requests are recycled through the request cache without\nbeing reinitialised, and not every user of ->hash_node sets it up before\nit is used:\n\nIf a vectored futex wait is woken while futex_wait_multiple_setup() is\nstill queueing the futexes, io_futexv_wait() doesn't add the request to\n->futex_list, and leaves the completion to the task_work queued by the\nwake up. io_futexv_complete() ends in __io_futex_complete(), whose\nhlist_del_init() is fine for a request that is unhashed, which is how all\nother users of the node leave it. If the request was a cancelable\nuring_cmd in its previous life, e.g. a ublk FETCH_REQ, it writes through\nLIST_POISON2:\n\n  Oops: general protection fault, probably for non-canonical address\n  KASAN: maybe wild-memory-access in range [0xdead000000000120-...]\n  RIP: 0010:io_futexv_complete+0x219/0x420\n  Call Trace:\n   tctx_task_work_run+0x804/0x950\n   tctx_task_work+0x71/0xa0\n   task_work_run+0x118/0x200\n\nLeave the node unhashed."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "io_uring/uring_cmd.c"
                    ],
                    "versions": [
                        {
                            "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
                            "lessThan": "cc7f13d006fcefed9564bd79f135b51d344e9c77",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
                            "lessThan": "2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
                            "lessThan": "685b49483200384d7f49d338af476e26e6824637",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
                            "lessThan": "c4fe1024b2f3f40f8010591a0c0ad541e2883eda",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
                            "lessThan": "4c83e39f4d1944d7146fd06094f2c8053238d55c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "io_uring/uring_cmd.c"
                    ],
                    "versions": [
                        {
                            "version": "6.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.115",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.60",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.14",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3.2",
                            "lessThanOrEqual": "7.3.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.4-rc1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.12.115"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.18.60"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.2.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.3.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.4-rc1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/cc7f13d006fcefed9564bd79f135b51d344e9c77"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707"
                },
                {
                    "url": "https://git.kernel.org/stable/c/685b49483200384d7f49d338af476e26e6824637"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c4fe1024b2f3f40f8010591a0c0ad541e2883eda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4c83e39f4d1944d7146fd06094f2c8053238d55c"
                }
            ],
            "title": "io_uring/cmd: don't leave list poison in ->hash_node",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}