{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81012", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.813Z", "datePublished": "2026-09-11T19:43:02.082Z", "dateUpdated": "2026-09-11T19:43:02.082Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:43:02.082Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: hp-bioscfg: fix off-by-one write in hp_get_string_from_buffer()\n\nhp_get_string_from_buffer() clamps the converted string length against\nthe destination buffer size with \"size > dst_size\", so when the\nconverted length is exactly equal to dst_size, conv_dst_size is left\nat dst_size and the unconditional NUL terminator write\n\n\tdst[conv_dst_size] = 0;\n\nlands one byte past the destination buffer. This is the same shape of\nbug as the previously fixed off-by-one in hp_convert_hexstr_to_str():\nthe buffer is sized correctly for the content, but the terminator\nwrite is never checked against that size.\n\nFix by changing the comparison to \">=\" so conv_dst_size is always left\nwith room for the terminator.\n\nAll fixed-size destinations that reach this function (path[512],\ncurrent_value[512], current_password/current_value[64], and the\nper-entry buffers in encodings[][512] and prerequisites[][512]) are\naffected."}], "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/bioscfg.c"], "versions": [{"version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "lessThan": "3cc772d0154799961f032e5a992d4a50523e291a", "status": "affected", "versionType": "git"}, {"version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "lessThan": "b15b334fbc3c0c46440f8a892ebf62164fca23d6", "status": "affected", "versionType": "git"}, {"version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "lessThan": "ddf98cf33529714b3ba1a158afb1db5b0f759a1a", "status": "affected", "versionType": "git"}, {"version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "lessThan": "dc03f05e419f3460342fb7564884f244622634b6", "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/bioscfg.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "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-rc1", "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": "6.12.109"}, {"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-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3cc772d0154799961f032e5a992d4a50523e291a"}, {"url": "https://git.kernel.org/stable/c/b15b334fbc3c0c46440f8a892ebf62164fca23d6"}, {"url": "https://git.kernel.org/stable/c/ddf98cf33529714b3ba1a158afb1db5b0f759a1a"}, {"url": "https://git.kernel.org/stable/c/dc03f05e419f3460342fb7564884f244622634b6"}], "title": "platform/x86: hp-bioscfg: fix off-by-one write in hp_get_string_from_buffer()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/platform/x86/hp/hp-bioscfg/bioscfg.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3cc772d0154799961f032e5a992d4a50523e291a", "status": "affected", "version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "versionType": "git"}, {"lessThan": "b15b334fbc3c0c46440f8a892ebf62164fca23d6", "status": "affected", "version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "versionType": "git"}, {"lessThan": "ddf98cf33529714b3ba1a158afb1db5b0f759a1a", "status": "affected", "version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "versionType": "git"}, {"lessThan": "dc03f05e419f3460342fb7564884f244622634b6", "status": "affected", "version": "a34fc329b1895fc8a6eb12099adc47009421ba6a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/platform/x86/hp/hp-bioscfg/bioscfg.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: hp-bioscfg: fix off-by-one write in hp_get_string_from_buffer()\n\nhp_get_string_from_buffer() clamps the converted string length against\nthe destination buffer size with \"size > dst_size\", so when the\nconverted length is exactly equal to dst_size, conv_dst_size is left\nat dst_size and the unconditional NUL terminator write\n\n\tdst[conv_dst_size] = 0;\n\nlands one byte past the destination buffer. This is the same shape of\nbug as the previously fixed off-by-one in hp_convert_hexstr_to_str():\nthe buffer is sized correctly for the content, but the terminator\nwrite is never checked against that size.\n\nFix by changing the comparison to \">=\" so conv_dst_size is always left\nwith room for the terminator.\n\nAll fixed-size destinations that reach this function (path[512],\ncurrent_value[512], current_password/current_value[64], and the\nper-entry buffers in encodings[][512] and prerequisites[][512]) are\naffected."}], "id": "CVE-2026-81012", "lastModified": "2026-09-11T20:19:10.050", "metrics": {}, "published": "2026-09-11T20:19:10.050", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3cc772d0154799961f032e5a992d4a50523e291a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b15b334fbc3c0c46440f8a892ebf62164fca23d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dc03f05e419f3460342fb7564884f244622634b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ddf98cf33529714b3ba1a158afb1db5b0f759a1a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel hp-bioscfg: Buffer overflow due to off-by-one write", "id": "2532131", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532131"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H", "status": "draft"}, "cwe": "CWE-193", "details": ["A flaw was found in the Linux kernel's hp-bioscfg component. The `hp_get_string_from_buffer()` function contains an off-by-one write vulnerability. This occurs because the NUL terminator can be written one byte beyond the allocated buffer, leading to a buffer overflow. An attacker could potentially exploit this to cause memory corruption."], "name": "CVE-2026-81012", "public_date": "2026-09-11T19:43:02Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-81012\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-81012\nhttps://git.kernel.org/stable/c/3cc772d0154799961f032e5a992d4a50523e291a\nhttps://git.kernel.org/stable/c/b15b334fbc3c0c46440f8a892ebf62164fca23d6\nhttps://git.kernel.org/stable/c/dc03f05e419f3460342fb7564884f244622634b6\nhttps://git.kernel.org/stable/c/ddf98cf33529714b3ba1a158afb1db5b0f759a1a"], "threat_severity": "Moderate"}

{}