{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89926",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.775Z",
        "datePublished": "2026-09-16T10:32:18.785Z",
        "dateUpdated": "2026-10-19T08:55:01.115Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:55:01.115Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix length check __import_wp_info()\n\nstruct kvm_hw_breakpoint::len is a __u64 that is fully controlled by user\nspace. This is then assigned to wp_info->len, which is an int. The bounds\ncheck is done on the truncated value while the allocation uses the\nuntruncated one:\n\n\twp_info->len = bp_data->len;\n\t[...]\n\tif (wp_info->len < 0 || wp_info->len > MAX_WP_SIZE)\n\t\treturn -EINVAL;\n\n\twp_info->old_data = kmalloc(bp_data->len, GFP_KERNEL_ACCOUNT);\n\nUse the validated value for the allocation as intended. Without this\nfix userspace can trigger >4GB allocations which will fail and result\nin a WARN due to MAX_PAGE_ORDER."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/s390/kvm/guestdbg.c"
                    ],
                    "versions": [
                        {
                            "version": "27291e2165b6de70c476b7b675308113edd69a60",
                            "lessThan": "aef540194effd768bed0bd2e6a74fe135a3d7c3a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "27291e2165b6de70c476b7b675308113edd69a60",
                            "lessThan": "71153d3262517e1c02c3a66aa5094f279b2d1454",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "27291e2165b6de70c476b7b675308113edd69a60",
                            "lessThan": "fec89d327d9b2b669b5bbdac209386c6317c3722",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "27291e2165b6de70c476b7b675308113edd69a60",
                            "lessThan": "b94ab9caa5d72c78226121cccff5e33f946da900",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "27291e2165b6de70c476b7b675308113edd69a60",
                            "lessThan": "beb9c55af609c4c7308259d7191688c75a4e3d4a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "27291e2165b6de70c476b7b675308113edd69a60",
                            "lessThan": "3fe801db90bdeefb0bbdda42d832846b53f64f8a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "27291e2165b6de70c476b7b675308113edd69a60",
                            "lessThan": "4c07680a467e2f7697245bcd11691bffb2a6f0ed",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/s390/kvm/guestdbg.c"
                    ],
                    "versions": [
                        {
                            "version": "3.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.5",
                            "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": "3.16",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "6.12.110"
                                },
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "6.18.51"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "7.2.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "7.3"
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/aef540194effd768bed0bd2e6a74fe135a3d7c3a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/71153d3262517e1c02c3a66aa5094f279b2d1454"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fec89d327d9b2b669b5bbdac209386c6317c3722"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b94ab9caa5d72c78226121cccff5e33f946da900"
                },
                {
                    "url": "https://git.kernel.org/stable/c/beb9c55af609c4c7308259d7191688c75a4e3d4a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3fe801db90bdeefb0bbdda42d832846b53f64f8a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4c07680a467e2f7697245bcd11691bffb2a6f0ed"
                }
            ],
            "title": "KVM: s390: Fix length check __import_wp_info()",
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}