Към съдържанието
Търсене

CVE-2026-43319: Linux

Няма оценка

CVSS

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: spi: spidev: fix lock inversion between spi_lock and buf_lock The spidev driver previously used two mutexes, spi_lock and buf_lock, but acquired them in different orders depending on the code path: write()/read(): buf_lock -> spi_lock ioctl(): spi_lock -> buf_lock This AB-BA locking pattern triggers lockdep warnings and can cause real deadlocks: WARNING: possible circular locking dependency detected spidev_ioctl() -> mutex_lock(&spidev->buf_lock) spidev_sync_write() -> mutex_lock(&spidev->spi_lock) *** DEADLOCK *** The issue is reproducible with a simple userspace program that performs write() and SPI_IOC_WR_MAX_SPEED_HZ ioctl() calls from separate threads on the same spidev file descriptor. Fix this by simplifying the locking model and removing the lock inversion entirely. spidev_sync() no longer performs any locking, and all callers serialize access using spi_lock. buf_lock is removed since its functionality is fully covered by spi_lock, eliminating the possibility of lock ordering issues. This removes the lock inversion and prevents deadlocks without changing userspace ABI or behaviour.

    Засегнати продукти

    • Linux Linux: a720416d94634068951773cb9e9d6f1b73769e5b преди fabfed1afe273717ea33b8aee46b767360edbb80; a720416d94634068951773cb9e9d6f1b73769e5b преди f8431b8672231d378b03176fe74c95adfd3522cf; a720416d94634068951773cb9e9d6f1b73769e5b преди e341e18215030af2136836b78508e0d798916df7; a720416d94634068951773cb9e9d6f1b73769e5b преди 41ccfac7d302968a4f32b5f7b012d066c5f5cdf8; a720416d94634068951773cb9e9d6f1b73769e5b преди 40534d19ed2afb880ecf202dab26a8e7a5808d16
    • Linux Linux: 6.2; преди 6.2; 6.6.142 до 6.6.*; 6.12.75 до 6.12.*; 6.18.16 до 6.18.*; 6.19.6 до 6.19.*; 7.0 до *

    История

    • 8 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-43319: Linux | freedomonline.bg