CVE-2020-29373
kernel: Insecure handling of root directory for path lookups via io_uring
Severity
UnknownRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 7, 2020
Updated · June 28, 2026
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 applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 0CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:N
CWE-552 · Files or Directories Accessible to External Parties