fs/namespace.c in the Linux kernel before 4.0.2 processes MNT_DETACH umount2 system calls without verifying that the MNT_LOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user namespace.
CVSS Details
- CVSS 3.1 Base Score: 6.1
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 2, 2016 |
| Suse | — | Upgrade kernel-ec2Upgrade kernel-docsUpgrade kernel-defaultUpgrade kernel-ec2-extraUpgrade kernel-obs-buildUpgrade kernel-ec2-devel | Jul 26, 2016 | May 2, 2016 |
| Ubuntu | — | Upgrade linux-raspi2 | Nov 19, 2024 | May 2, 2016 |
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