CVE-2026-64213
MEDIUMAttack Surface
CVSS Vector Breakdown
Description
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.
Affected Software (11)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 7a1d220ccb0cc2b808eb176fb05bf55a38179f3f < 1dc6a3469b5427e3bfd19010d7755ebc6019abc1 |
| Linux | Linux | 7a1d220ccb0cc2b808eb176fb05bf55a38179f3f < 02b88fa993582b4fe228b4143b330b0bb9f28353 |
| Linux | Linux | 7a1d220ccb0cc2b808eb176fb05bf55a38179f3f < 165ef777ec6f634a5e4b8d9b0dadca8ef91fa90e |
| Linux | Linux | 7a1d220ccb0cc2b808eb176fb05bf55a38179f3f < bed1fc32e0eb653806fa98afcf55f9a311fc4ce2 |
| Linux | Linux | 7a1d220ccb0cc2b808eb176fb05bf55a38179f3f < b0b66aae8a94c3663d47e4000b0e81b89ce32186 |
| Linux | Linux | 7a1d220ccb0cc2b808eb176fb05bf55a38179f3f < 873e919e3101063a7a75989510ccfc125a4391cf |
| Linux | Linux | 5.3 |
| linux | linux_kernel | 5.3 – 6.18.34 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |