{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72500",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-09T03:40:39.937Z",
        "datePublished": "2026-08-15T05:57:32.341Z",
        "dateUpdated": "2026-08-17T05:45:01.023Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:45:01.023Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/bnxt_re: Free SRQ toggle page after firmware teardown\n\nFree the toggle page only after firmware teardown completes so that\nan NQ interrupt arriving during bnxt_qplib_destroy_srq() won't write\nthe toggle values to an already-freed page. Move free_page() after\nbnxt_qplib_destroy_srq()."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The bug is triggered by destroying a user SRQ through the RDMA uverbs ioctl on /dev/infiniband/uverbs*; although RoCE peers can generate SRQ/NQ events, the premature free_page() only occurs in this local destroy path, not from remote packet handling alone.\nAC:L - An attacker controls SRQ teardown timing via ibv_destroy_srq and can reliably create the race by keeping QPs/posted receives active and/or soliciting SRQ threshold events (including from a cooperating RoCE peer) while destroy_srq runs through bnxt_qplib_destroy_srq firmware teardown.\nPR:L - Exploitation requires only local RDMA verbs access to create/destroy a user SRQ on a Gen P7 bnxt_re device; uverbs char devices are created world-accessible (0666) and RDMA is commonly granted to unprivileged HPC/cloud/Kubernetes workload users rather than real root.\nUI:N - No victim interaction is required beyond the attacker (or compromised local workload) invoking SRQ destroy on resources it already controls; remote peers may assist timing but do not need the victim to click, mount, or open files.\nS:C - On Kubernetes/HPC hosts that expose bnxt_re to containers/pods, triggering this host-kernel UAF from an unprivileged RDMA-enabled workload can corrupt host memory and enable container-to-host sandbox escape beyond the workload security boundary.\nC:H - This is a kernel write-after-free: an NQ interrupt writes a toggle value into a page already returned to the buddy allocator, enabling corruption of subsequently reallocated kernel objects and classic UAF-based information disclosure primitives.\nI:H - The interrupt path performs a controlled 4-byte write to freed kernel memory during destroy_srq, providing a heap corruption primitive that can be developed into arbitrary kernel write or code execution rather than being limited to a benign crash.\nA:H - Writing to a freed page during interrupt handling can oops/panic the kernel immediately, and repeated SRQ create/destroy cycles let an attacker reliably induce host-level denial of service on RDMA-enabled systems."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/infiniband/hw/bnxt_re/ib_verbs.c"
                    ],
                    "versions": [
                        {
                            "version": "181028a0d84cdcc7ac86d05cc49eaa416ce85c8b",
                            "lessThan": "104a7ff382a58a83cae018925e3574c784e8274c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "181028a0d84cdcc7ac86d05cc49eaa416ce85c8b",
                            "lessThan": "0adcd67f3d6f84835be682da0153f57f5c2f8036",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "181028a0d84cdcc7ac86d05cc49eaa416ce85c8b",
                            "lessThan": "131e2918b9b0529687e67e2e58047304027f095a",
                            "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/infiniband/hw/bnxt_re/ib_verbs.c"
                    ],
                    "versions": [
                        {
                            "version": "6.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "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": "6.12",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.1.5"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.2"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/104a7ff382a58a83cae018925e3574c784e8274c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0adcd67f3d6f84835be682da0153f57f5c2f8036"
                },
                {
                    "url": "https://git.kernel.org/stable/c/131e2918b9b0529687e67e2e58047304027f095a"
                }
            ],
            "title": "RDMA/bnxt_re: Free SRQ toggle page after firmware teardown",
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}