{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31395",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.085Z",
        "datePublished": "2026-04-03T15:15:59.590Z",
        "dateUpdated": "2026-05-11T22:07:52.201Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:07:52.201Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: fix OOB access in DBG_BUF_PRODUCER async event handler\n\nThe ASYNC_EVENT_CMPL_EVENT_ID_DBG_BUF_PRODUCER handler in\nbnxt_async_event_process() uses a firmware-supplied 'type' field\ndirectly as an index into bp->bs_trace[] without bounds validation.\n\nThe 'type' field is a 16-bit value extracted from DMA-mapped completion\nring memory that the NIC writes directly to host RAM. A malicious or\ncompromised NIC can supply any value from 0 to 65535, causing an\nout-of-bounds access into kernel heap memory.\n\nThe bnxt_bs_trace_check_wrap() call then dereferences bs_trace->magic_byte\nand writes to bs_trace->last_offset and bs_trace->wrapped, leading to\nkernel memory corruption or a crash.\n\nFix by adding a bounds check and defining BNXT_TRACE_MAX as\nDBG_LOG_BUFFER_FLUSH_REQ_TYPE_ERR_QPC_TRACE + 1 to cover all currently\ndefined firmware trace types (0x0 through 0xc)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/broadcom/bnxt/bnxt.c",
                        "drivers/net/ethernet/broadcom/bnxt/bnxt.h"
                    ],
                    "versions": [
                        {
                            "version": "84fcd9449fd7882ddfb05ba64d75f9be2d29b2e9",
                            "lessThan": "19aa416eed9e4aaf1bbe8da0f7bd9a9be31158c8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "84fcd9449fd7882ddfb05ba64d75f9be2d29b2e9",
                            "lessThan": "b7c7a275447c6d4bf4a36a134682e2e4e20efd4b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "84fcd9449fd7882ddfb05ba64d75f9be2d29b2e9",
                            "lessThan": "64dcbde7f8f870a4f2d9daf24ffb06f9748b5dd3",
                            "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/broadcom/bnxt/bnxt.c",
                        "drivers/net/ethernet/broadcom/bnxt/bnxt.h"
                    ],
                    "versions": [
                        {
                            "version": "6.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.20",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.10",
                            "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": "6.13",
                                    "versionEndExcluding": "6.18.20"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "6.19.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/19aa416eed9e4aaf1bbe8da0f7bd9a9be31158c8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b7c7a275447c6d4bf4a36a134682e2e4e20efd4b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/64dcbde7f8f870a4f2d9daf24ffb06f9748b5dd3"
                }
            ],
            "title": "bnxt_en: fix OOB access in DBG_BUF_PRODUCER async event handler",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}