CVE-2026-23221
HighSummary
W jądrze systemu Linux zidentyfikowano podatność w funkcji driver_override_show(), która odczytuje ciąg driver_override bez trzymania blokady urządzenia. Może to prowadzić do sytuacji use-after-free, gdy ciąg jest zwalniany przez funkcję driver_override_store() w trakcie jego odczytu.
Risk Assessment
Podatność ta może prowadzić do nieprzewidzianego zachowania systemu, w tym potencjalnych awarii lub naruszeń bezpieczeństwa, co stanowi zagrożenie dla stabilności i integralności systemu.
Recommendation
Zaleca się aktualizację jądra systemu Linux do wersji, w której ta podatność została naprawiona, aby zapewnić bezpieczeństwo i stabilność systemu.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix use-after-free in driver_override_show() The driver_override_show() function reads the driver_override string without holding the device_lock. However, driver_override_store() uses driver_set_override(), which modifies and frees the string while holding the device_lock. This can result in a concurrent use-after-free if the string is freed by the store function while being read by the show function. Fix this by holding the device_lock around the read operation.