{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23386",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:46.008Z",
        "datePublished": "2026-03-25T10:28:04.118Z",
        "dateUpdated": "2026-05-11T22:05:52.379Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:05:52.379Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngve: fix incorrect buffer cleanup in gve_tx_clean_pending_packets for QPL\n\nIn DQ-QPL mode, gve_tx_clean_pending_packets() incorrectly uses the RDA\nbuffer cleanup path. It iterates num_bufs times and attempts to unmap\nentries in the dma array.\n\nThis leads to two issues:\n1. The dma array shares storage with tx_qpl_buf_ids (union).\n Interpreting buffer IDs as DMA addresses results in attempting to\n unmap incorrect memory locations.\n2. num_bufs in QPL mode (counting 2K chunks) can significantly exceed\n the size of the dma array, causing out-of-bounds access warnings\n(trace below is how we noticed this issue).\n\nUBSAN: array-index-out-of-bounds in\ndrivers/net/ethernet/drivers/net/ethernet/google/gve/gve_tx_dqo.c:178:5 index 18 is out of\nrange for type 'dma_addr_t[18]' (aka 'unsigned long long[18]')\nWorkqueue: gve gve_service_task [gve]\nCall Trace:\n<TASK>\ndump_stack_lvl+0x33/0xa0\n__ubsan_handle_out_of_bounds+0xdc/0x110\ngve_tx_stop_ring_dqo+0x182/0x200 [gve]\ngve_close+0x1be/0x450 [gve]\ngve_reset+0x99/0x120 [gve]\ngve_service_task+0x61/0x100 [gve]\nprocess_scheduled_works+0x1e9/0x380\n\nFix this by properly checking for QPL mode and delegating to\ngve_free_tx_qpl_bufs() to reclaim the buffers."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/google/gve/gve_tx_dqo.c"
                    ],
                    "versions": [
                        {
                            "version": "a6fb8d5a8b6925f1e635818d3dd2d89531d4a058",
                            "lessThan": "71511dae56a75ce161aa746741e5c498feaea393",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6fb8d5a8b6925f1e635818d3dd2d89531d4a058",
                            "lessThan": "c171f90f58974c784db25e0606051541cb71b7f0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6fb8d5a8b6925f1e635818d3dd2d89531d4a058",
                            "lessThan": "07e0c80e17ef781799e7cd5c41a7bf44f1bf6a5f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6fb8d5a8b6925f1e635818d3dd2d89531d4a058",
                            "lessThan": "3744ebd8ffaa542ae8110fb449adcac0202f4cc8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6fb8d5a8b6925f1e635818d3dd2d89531d4a058",
                            "lessThan": "fb868db5f4bccd7a78219313ab2917429f715cea",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/google/gve/gve_tx_dqo.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.130",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.78",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.17",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.7",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.6",
                                    "versionEndExcluding": "6.6.130"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.12.78"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.18.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.19.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/71511dae56a75ce161aa746741e5c498feaea393"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c171f90f58974c784db25e0606051541cb71b7f0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/07e0c80e17ef781799e7cd5c41a7bf44f1bf6a5f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3744ebd8ffaa542ae8110fb449adcac0202f4cc8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fb868db5f4bccd7a78219313ab2917429f715cea"
                }
            ],
            "title": "gve: fix incorrect buffer cleanup in gve_tx_clean_pending_packets for QPL",
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                "engine": "bippy-1.2.0"
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    }
}