CVE-2017-17807: Linux Kernel

Low severity, CVSS 3.3. EPSS: 0.4% chance of exploitation in the next 30 days.

The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.

Affected products

• Linux Linux Kernel: before 4.14.6 (fixed in 4.14.6)

Published 2017-12-20. Last modified 2026-06-17.