Resource management errors in Linux kernel - CVE-2017-18075
Published: April 11, 2018
Vulnerability identifier: #VU11764
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-18075
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in crypto/pcrypt.c due to mishandling freeing instances. A local attacker can gain access to the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT), execute a crafted sequence of system calls and cause the service to crash (kfree of an incorrect pointer).
The weakness exists in crypto/pcrypt.c due to mishandling freeing instances. A local attacker can gain access to the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT), execute a crafted sequence of system calls and cause the service to crash (kfree of an incorrect pointer).
How to mitigate CVE-2017-18075
Update to version 4.14.13.