Vulnerability Description
An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations, aka CID-ff002b30181d.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.6 |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2011ExploitIssue TrackingThird Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6Release NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ffPatchVendor Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2011ExploitIssue TrackingThird Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6Release NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ffPatchVendor Advisory
FAQ
What is CVE-2020-29373?
CVE-2020-29373 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintende...
How severe is CVE-2020-29373?
CVE-2020-29373 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-29373?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.