{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68286",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.379Z",
        "datePublished": "2026-08-10T12:02:19.077Z",
        "dateUpdated": "2026-10-03T10:55:41.847Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-03T10:55:41.847Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrop_monitor: perform u64_stats updates under IRQ-disabled section\n\nIn net_dm_packet_trace_kfree_skb_hit() and net_dm_hw_trap_packet_probe(),\nu64_stats_update_begin() / u64_stats_inc() / u64_stats_update_end() were\ncalled after spin_unlock_irqrestore(&...drop_queue.lock, flags), when local\nIRQs had already been re-enabled.\n\nTracepoint probes can execute in IRQ or softirq context. On 32-bit\narchitectures, u64_stats_update_begin() disables preemption but not interrupts,\nrelying on seqcount writes. If a nested interrupt occurs on the same CPU during\nthe 64-bit stats update, the reentrant seqcount update can corrupt the\nseqcount state or stats value.\n\nFix this by performing the 64-bit per-CPU stats update before releasing\ndrop_queue.lock via spin_unlock_irqrestore(), ensuring local interrupts remain\ndisabled during the u64_stats update."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/drop_monitor.c"
                    ],
                    "versions": [
                        {
                            "version": "e9feb58020f952f7d9de785ede9a7d54ab1eda5c",
                            "lessThan": "dd8472526a04f2185afd792b8041a912a7d75d85",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9feb58020f952f7d9de785ede9a7d54ab1eda5c",
                            "lessThan": "3454c729ee8aa682ec871f1b174b047f731933ae",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9feb58020f952f7d9de785ede9a7d54ab1eda5c",
                            "lessThan": "be9b121894d6ad44f0011f79543a2e3245979497",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9feb58020f952f7d9de785ede9a7d54ab1eda5c",
                            "lessThan": "7d857cf5f0120bb0e020fa20b03bd21b9d3e0c04",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9feb58020f952f7d9de785ede9a7d54ab1eda5c",
                            "lessThan": "d5e2cd2bc8ae36617346b3a54ee9da61d866bf92",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9feb58020f952f7d9de785ede9a7d54ab1eda5c",
                            "lessThan": "fd098a23bf8fda7eae48db9b06e7c34fc4d228fa",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/drop_monitor.c"
                    ],
                    "versions": [
                        {
                            "version": "5.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "5.4",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.12.111"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.18.53"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "7.1.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/dd8472526a04f2185afd792b8041a912a7d75d85"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3454c729ee8aa682ec871f1b174b047f731933ae"
                },
                {
                    "url": "https://git.kernel.org/stable/c/be9b121894d6ad44f0011f79543a2e3245979497"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7d857cf5f0120bb0e020fa20b03bd21b9d3e0c04"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d5e2cd2bc8ae36617346b3a54ee9da61d866bf92"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fd098a23bf8fda7eae48db9b06e7c34fc4d228fa"
                }
            ],
            "title": "drop_monitor: perform u64_stats updates under IRQ-disabled section",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}