{"cveID":"CVE-2021-3493","vendorProject":"Linux","product":"Kernel","vulnerabilityName":"Linux Kernel Privilege Escalation Vulnerability","dateAdded":"2022-10-20","shortDescription":"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.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2022-11-10","knownRansomwareCampaignUse":"Unknown","notes":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7c03e2cda4a584cadc398e8f6641ca9988a39d52; https://nvd.nist.gov/vuln/detail/CVE-2021-3493","cwes":["CWE-862"],"year":2021,"state":"unmapped","stale_reasons":[],"mappings":[],"techniques":[],"mapping_types":[],"has_exploitation_technique":false,"mapping_attack_versions":[],"mapping_domains":[],"sigma_coverage":null,"sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-24 19:45 UTC","_attack_version":"19.2"}