{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80927",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.802Z",
        "datePublished": "2026-09-11T19:42:03.257Z",
        "dateUpdated": "2026-10-19T08:45:11.147Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:45:11.147Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntimekeeping: Check the return value of tk_get_aux_ts64 in __do_adjtimex()\n\nIf the auxiliary clock is disabled during tk_get_aux_ts64() but is enabled\nbefore tks->clock_valid is checked, then uninitialized stackdata will be\nused in the calculations and indirectly leaked to userspace.\n\nThe same race window also exists after this change and also for the core\ntimekeeper. But in these cases the only effect would be incorrect\nadjustments and this is userspace's responsibility to avoid this."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/time/timekeeping.c"
                    ],
                    "versions": [
                        {
                            "version": "4eca49d0b621b314ac7c80f363932ec6f6c8abc8",
                            "lessThan": "fecf1e37775269ad38c172b468ad4ecc3968aa63",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4eca49d0b621b314ac7c80f363932ec6f6c8abc8",
                            "lessThan": "bc59dac50cb45a725f7a50760c7cc72a0964f722",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4eca49d0b621b314ac7c80f363932ec6f6c8abc8",
                            "lessThan": "4b61084b11bcecce86d03804ff30f8d7b465593c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/time/timekeeping.c"
                    ],
                    "versions": [
                        {
                            "version": "6.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "6.17",
                                    "versionEndExcluding": "6.18.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/fecf1e37775269ad38c172b468ad4ecc3968aa63"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bc59dac50cb45a725f7a50760c7cc72a0964f722"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4b61084b11bcecce86d03804ff30f8d7b465593c"
                }
            ],
            "title": "timekeeping: Check the return value of tk_get_aux_ts64 in __do_adjtimex()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}