CVE-2026-43281
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
W jądrze systemu Linux zidentyfikowano podatność, która pozwala na dostęp poza granice w funkcji fw_mbox_index_xlate(). Problem występuje, gdy w drzewie urządzeń zdefiniowano `#mbox-cells = <0>;`, co może prowadzić do niekontrolowanego dostępu, jeśli nie są dostarczone wskaźniki funkcji `fw_xlate` i `of_xlate`.
Risk Assessment
Organizacje mogą być narażone na nieautoryzowany dostęp do pamięci, co może prowadzić do awarii systemu lub naruszenia integralności danych. W przypadku wykorzystania tej podatności, atakujący może uzyskać dostęp do wrażliwych informacji lub zdalnie kontrolować system.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, aby usunąć tę podatność. Dodatkowo, należy zweryfikować konfigurację drzew urządzeń, aby upewnić się, że `#mbox-cells` jest poprawnie ustawione.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate() Although it is guided that `#mbox-cells` must be at least 1, there are many instances of `#mbox-cells = <0>;` in the device tree. If that is the case and the corresponding mailbox controller does not provide `fw_xlate` and of_xlate` function pointers, `fw_mbox_index_xlate()` will be used by default and out-of-bounds accesses could occur due to lack of bounds check in that function.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

