Actively exploited in the wild
Linux Kernel Race Condition Vulnerability
Linux - Kernel · Listed in the CISA KEV since 2022-03-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2016-5195
HighCVSS 7.0KEVSummary
W systemie Linux w wersjach 2.x do 4.x przed 4.8.3 występuje warunkowa rywalizacja w pliku mm/gup.c, która pozwala lokalnym użytkownikom na uzyskanie uprawnień poprzez niewłaściwe zarządzanie funkcją copy-on-write (COW), co umożliwia zapis do pamięci tylko do odczytu. Ta podatność była wykorzystywana w praktyce w październiku 2016 roku, znana jako 'Dirty COW'.
Risk Assessment
Organizacje mogą być narażone na nieautoryzowany dostęp do systemów, co może prowadzić do eskalacji uprawnień i potencjalnych naruszeń bezpieczeństwa.
Recommendation
Zaleca się aktualizację jądra systemu Linux do wersji 4.8.3 lub nowszej, aby usunąć tę podatność oraz monitorowanie systemów w celu wykrycia potencjalnych prób wykorzystania tej luki.
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Original NVD description (English source)
Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."