{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72025",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-09T03:40:39.900Z",
        "datePublished": "2026-08-15T05:51:49.928Z",
        "dateUpdated": "2026-08-18T06:56:09.214Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-18T06:56:09.214Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/monwriter: Reject buffer reuse with different data length\n\nWhen data buffers are reused, e.g. for interval sample records, the\nfirst record determines the data length, and the size of the buffer for\nuser copy. Current monwriter code does not check if the data length was\nchanged for subsequent records, which also would never happen for valid\nuser programs.\n\nHowever, a malicious user could change the data length, resulting in out\nof bounds user copy to the kernel buffer, and memory corruption. By\ndefault, the monwriter misc device is created with root-only permissions,\nso practical impact is typically low.\n\nFix this by checking for changed data length and rejecting such records."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/s390/char/monwriter.c"
                    ],
                    "versions": [
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "096dff1247037d329c04b3a5be0ecdfb1c5c7ac6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "759d91378203ea35fa9bca6726dcf0010de081fb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "036bc5661060702e798d215e81bb46da530965b3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "01f3ce411711c2c919598ea25320a5a48f71edbc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "f0745496f7c171271cafd9457df3b914a483ddeb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "ae5347f3db1782c6118f6cc0d9fd8b1d43397db3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31b58088292c7f00f0b81088bfb557285b0b6247",
                            "lessThan": "2995ccec260caa9e85b3301a4aba1e66ed80ad74",
                            "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/s390/char/monwriter.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "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": "2.6.19",
                                    "versionEndExcluding": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.19",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.19",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.19",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.19",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.19",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.19",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.19",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/096dff1247037d329c04b3a5be0ecdfb1c5c7ac6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab"
                },
                {
                    "url": "https://git.kernel.org/stable/c/759d91378203ea35fa9bca6726dcf0010de081fb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/036bc5661060702e798d215e81bb46da530965b3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/01f3ce411711c2c919598ea25320a5a48f71edbc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f0745496f7c171271cafd9457df3b914a483ddeb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ae5347f3db1782c6118f6cc0d9fd8b1d43397db3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2995ccec260caa9e85b3301a4aba1e66ed80ad74"
                }
            ],
            "title": "s390/monwriter: Reject buffer reuse with different data length",
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    }
}