CVE-2017-17807

CVE-2017-17807 is a low-severity access control bypass vulnerability affecting the Linux kernel before version 4.14.6. It allows a local attacker to add keys to a keyring with only Search permission, bypassing the intended Write permission requirement, through a crafted sequence of system calls to the KEYS subsystem. The CVSS score is 3.3, indicating a low impact on integrity and no impact on confidentiality or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.