hwmon: (lm90) Add lock protection to lm90_alert
In the Linux kernel, the following vulnerability has been resolved: hwmon: (lm90) Add lock protection to lm90_alert Sashiko reports: lm90_alert() executes in the smbus alert context and calls lm90_update_confreg() to disable the hardware alert line, without acquiring hwmon_lock. Concurrently, sysfs write operations (such as lm90_write_convrate) hold the hwmon_lock, temporarily modify data->config, and then restore it. If an alert interrupt occurs concurrently with a sysfs write, the sysfs path will overwrite the alert handler's modifications to data->config and the hardware register. This unintentionally re-enables the hardware alert line while the alarm is still active, causing an interrupt storm. Add the missing lock to lm90_alert() to solve the problem.
CVE-2026-64213
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-64213
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7a1d220ccb0cc2b808eb176fb05bf55a38179f3f",
"lessThan": "02b88fa993582b4fe228b4143b330b0bb9f28353",
"versionType": "git"
},
{
"status": "affected",
"version": "7a1d220ccb0cc2b808eb176fb05bf55a38179f3f",
"lessThan": "165ef777ec6f634a5e4b8d9b0dadca8ef91fa90e",
"versionType": "git"
},
{
"status": "affected",
"version": "7a1d220ccb0cc2b808eb176fb05bf55a38179f3f",
"lessThan": "bed1fc32e0eb653806fa98afcf55f9a311fc4ce2",
"versionType": "git"
},
{
"status": "affected",
"version": "7a1d220ccb0cc2b808eb176fb05bf55a38179f3f",
"lessThan": "b0b66aae8a94c3663d47e4000b0e81b89ce32186",
"versionType": "git"
},
{
"status": "affected",
"version": "7a1d220ccb0cc2b808eb176fb05bf55a38179f3f",
"lessThan": "873e919e3101063a7a75989510ccfc125a4391cf",
"versionType": "git"
}
],
"programFiles": [
"drivers/hwmon/lm90.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.34",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.11",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hwmon/lm90.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64213
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46428 · Revision 1
- Added to Heist Feed
- Publisher date