{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-81013",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.813Z",
        "datePublished": "2026-09-11T19:43:02.741Z",
        "dateUpdated": "2026-10-19T08:46:38.578Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:46:38.578Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: hp-bioscfg: fix heap OOB read on empty password write\n\nvalidate_password_input() computes length = strlen(buf) and then\nchecks buf[length - 1] to strip a trailing newline, without checking\nthat length is nonzero first. Writing an empty string (a bare '\\n')\nto current_password or new_password gives length == 0, and\nbuf[length - 1] reads buf[-1], one byte before the heap allocation\nholding the copied input.\n\nKASAN confirms this directly:\n\n  BUG: KASAN: slab-out-of-bounds in store_password_instance.constprop.0+0x223/0x2a0 [hp_bioscfg]\n  Read of size 1 at addr ffff88811bd8da9f by task sh/13740\n  ...\n  store_password_instance.constprop.0+0x223/0x2a0 [hp_bioscfg]\n  current_password_store+0x14/0x20 [hp_bioscfg]\n  ...\n  The buggy address is located 23 bytes to the right of\n  allocated 8-byte region [ffff88811bd8da80, ffff88811bd8da88)\n\nReproduced identically via new_password_store. Execution continues\npast the bad read (the garbage byte only affects whether \"length\" is\ndecremented by one), so the write completes and returns success; this\nis a pure information read past the buffer, not a crash, but it is\nstill an out-of-bounds access KASAN correctly flags.\n\nFix by only checking buf[length - 1] when length is nonzero."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c"
                    ],
                    "versions": [
                        {
                            "version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
                            "lessThan": "21243c15e1d31f0df1517435e3a7784747f19043",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
                            "lessThan": "cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
                            "lessThan": "0f9aad08424882dd5714b53d29ae044060890752",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
                            "lessThan": "b699e5c1f63a9e79946c35598c8a6f7af2c356b8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
                            "lessThan": "2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab",
                            "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/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.109",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "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": "6.6",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.12.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.18.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/21243c15e1d31f0df1517435e3a7784747f19043"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0f9aad08424882dd5714b53d29ae044060890752"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b699e5c1f63a9e79946c35598c8a6f7af2c356b8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab"
                }
            ],
            "title": "platform/x86: hp-bioscfg: fix heap OOB read on empty password write",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}