CVE-2026-64213
Açıklama (NVD)
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.
Yayın: 24.07.2026 · Son değişiklik: 06.11.2026
CVSS 3.1 metrikleri
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
| Saldırı vektörü | Yerel |
| Karmaşıklık | Düşük |
| Gereken yetki | Düşük |
| Kullanıcı etkileşimi | Gerekmez |
| Kapsam | Değişmez |
| Gizlilik | Yok |
| Bütünlük | Yok |
| Erişilebilirlik | Yüksek |
Hesaplanan temel puan: 5.5. CVSS hesaplayıcıda incele
Referanslar
- https://git.kernel.org/stable/c/02b88fa993582b4fe228b4143b330b0bb9f28353
- https://git.kernel.org/stable/c/165ef777ec6f634a5e4b8d9b0dadca8ef91fa90e
- https://git.kernel.org/stable/c/1dc6a3469b5427e3bfd19010d7755ebc6019abc1
- https://git.kernel.org/stable/c/873e919e3101063a7a75989510ccfc125a4391cf
- https://git.kernel.org/stable/c/b0b66aae8a94c3663d47e4000b0e81b89ce32186
- https://git.kernel.org/stable/c/bed1fc32e0eb653806fa98afcf55f9a311fc4ce2