Path Traversal in Linux Kernel
CVE-2020-29373
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6 (Release Notes, Vendor Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- bugs.chromium.org/p/project-zero/issues/detail (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2020-29373?
- CVE-2020-29373 is a medium-severity vulnerability in Linux Kernel, classified under Path Traversal. CVSS score: 6.5/10. Published 2020-11-28.
- How severe is CVE-2020-29373?
- Medium severity. CVSS v3 base score is 6.5 out of 10.