185 lines
9.6 KiB
JSON
185 lines
9.6 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-98200",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-09-25T10:25:14.324Z",
|
|
"datePublished": "2026-10-06T08:44:38.289Z",
|
|
"dateUpdated": "2026-10-19T09:15:31.295Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-19T09:15:31.295Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (hp-wmi-sensors) Fix use-after-free in fungible_show()\n\nnsensor->current_state is dynamically replaced as the sensor's state\nchanges. update_numeric_sensor_from_wobj() does this by freeing the\nold string and installing a new one:\n\n\tif (strcmp(trimmed, nsensor->current_state)) {\n\t\tnew_string = hp_wmi_strdup(dev, trimmed);\n\t\tif (new_string) {\n\t\t\tdevm_kfree(dev, nsensor->current_state);\n\t\t\tnsensor->current_state = new_string;\n\t\t}\n\t}\n\nThis function is only ever called from hp_wmi_update_info() while\nstate->lock is held, so the free-and-replace itself is properly\nserialized against concurrent updates.\n\nfungible_show(), however, reads the same pointer after the lock has\nalready been dropped:\n\n\terr = hp_wmi_update_info(state, info);\n\tif (err)\n\t\treturn err;\n\n\tswitch (prop) {\n\t...\n\tcase HP_WMI_PROPERTY_CURRENT_STATE:\n\t\tseq_printf(seqf, \"%s\\n\", nsensor->current_state);\n\t\tbreak;\n\nhp_wmi_update_info() takes state->lock internally and releases it\nbefore returning, so by the time fungible_show() dereferences\nnsensor->current_state in seq_printf(), no lock is held. Two\nprocesses reading a sensor's current_state debugfs entry at\noverlapping times (or one reading it while another read of the same\nsensor triggers a refresh) can race: one thread's seq_printf() can\nbe part-way through printing the string at the moment another\nthread's call into update_numeric_sensor_from_wobj() frees it with\ndevm_kfree() and installs a new pointer, causing a use-after-free\nread.\n\nTake state->lock around the read in fungible_show() as well, so it\ncan never run concurrently with the free-and-replace in\nupdate_numeric_sensor_from_wobj()."
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/hwmon/hp-wmi-sensors.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "23902f98f8d4811ab84dde6419569a5b374f8122",
|
|
"lessThan": "b6b2a638aa36c441b2c8d0b6bd8ed2bb9701e795",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "23902f98f8d4811ab84dde6419569a5b374f8122",
|
|
"lessThan": "f59ecfd2c58bace39538f3fff7f43788b3fdb539",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "23902f98f8d4811ab84dde6419569a5b374f8122",
|
|
"lessThan": "72c85149794a1ccf8d718ffed1521106b5d31968",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "23902f98f8d4811ab84dde6419569a5b374f8122",
|
|
"lessThan": "9c1e65bc79ff104914b11e6ad972139296ec86fe",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "23902f98f8d4811ab84dde6419569a5b374f8122",
|
|
"lessThan": "e6cb0b4d4ecb8e71fd2200d907ab2e9663356f69",
|
|
"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/hwmon/hp-wmi-sensors.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.5",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.5",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.158",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.112",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.54",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2.8",
|
|
"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": "6.5",
|
|
"versionEndExcluding": "6.6.158"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "6.12.112"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "6.18.54"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "7.2.8"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "7.3"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/b6b2a638aa36c441b2c8d0b6bd8ed2bb9701e795"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f59ecfd2c58bace39538f3fff7f43788b3fdb539"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/72c85149794a1ccf8d718ffed1521106b5d31968"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/9c1e65bc79ff104914b11e6ad972139296ec86fe"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e6cb0b4d4ecb8e71fd2200d907ab2e9663356f69"
|
|
}
|
|
],
|
|
"title": "hwmon: (hp-wmi-sensors) Fix use-after-free in fungible_show()",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
}
|
|
}
|
|
} |