ACTIVELY EXPLOITED3 sources verified·1 min read
By Lyrie Threat Intelligence·10/20/2022
CVE-2021-3493 added to CISA KEV: Linux Kernel
Status: ✅ Confirmed exploited in the wild
Date added: 2022-10-20
Required action: Apply updates per vendor instructions.
Due date: 2022-11-10
Why this matters
The overlayfs stacking file system in Linux kernel does not properly validate the application of file capabilities against user namespaces, which could lead to privilege escalation.
Sources
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