Vulnerability identifier: #VU12316
Vulnerability risk: Medium
Exploitation vector: Network
Exploit availability: No
Vendor: Linux Foundation
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the fscrypt_process_policy function in fs/crypto/policy.c in the ext4 and f2fs filesystem encryption support due to missing authorization check. A remote attacker can assign an encryption policy to a directory owned by a different user and cause the service to crash.
Update to version 4.7.4.
Vulnerable software versions
Linux kernel: 4.7.0 - 4.7.3
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.