The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges.
oryginał ENCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HCanonical Ubuntu
OSCanonical< 18.0418.04.1 – 20.04 (bez)< 20.10
CISA KEV — szczegółyi
- Dostawcai
- Linux
- Produkti
- Kernel
- Data dodania do KEVi
- 20 października 2022
- Termin remediation (USA)i
- 10 listopada 2022(po terminie)
Zastosuj aktualizacje zgodnie z instrukcjami producenta.
▸ Pokaż oryginał (EN)
Apply updates per vendor instructions.
System plików stacking overlayfs w kernelu Linux nie waliduje prawidłowo aplikowania możliwości pliku względem user namespaces, co mogłoby prowadzić do eskalacji uprawnień.
▸ Pokaż oryginał (EN)
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.
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