185 lines
9.3 KiB
JSON
185 lines
9.3 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-81013",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.813Z",
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"datePublished": "2026-09-11T19:43:02.741Z",
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"dateUpdated": "2026-10-19T08:46:38.578Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T08:46:38.578Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c"
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],
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"versions": [
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{
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"version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
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"lessThan": "21243c15e1d31f0df1517435e3a7784747f19043",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
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"lessThan": "cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
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"lessThan": "0f9aad08424882dd5714b53d29ae044060890752",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
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"lessThan": "b699e5c1f63a9e79946c35598c8a6f7af2c356b8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8646a3b5ee3a5b384a22a721f37c24274d974045",
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"lessThan": "2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c"
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],
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"versions": [
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{
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"version": "6.6",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.6",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.157",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.109",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.50",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.4",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "6.6.157"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "6.12.109"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "6.18.50"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "7.2.4"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/21243c15e1d31f0df1517435e3a7784747f19043"
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},
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{
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"url": "https://git.kernel.org/stable/c/cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828"
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},
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{
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"url": "https://git.kernel.org/stable/c/0f9aad08424882dd5714b53d29ae044060890752"
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},
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{
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"url": "https://git.kernel.org/stable/c/b699e5c1f63a9e79946c35598c8a6f7af2c356b8"
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},
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{
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"url": "https://git.kernel.org/stable/c/2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab"
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}
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],
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"title": "platform/x86: hp-bioscfg: fix heap OOB read on empty password write",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |