Improper Privilege Management Affecting torvalds/linux package, versions [,v5.11-rc1)
Threat Intelligence
Snyk has reported that there have been attempts or successful attacks targeting this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-7644402
- published7 Aug 2024
- disclosed6 Aug 2024
Introduced: 6 Aug 2024
CVE-2021-3493 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version v5.11-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Privilege Management due to improper validation in the overlayfs implementation with respect to user namespaces. An attacker can gain elevated privileges by exploiting the setting of file capabilities on files in an underlying file system. This is only exploitable if the system has the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts