Resource exhaustion in Linux kernel - CVE-2017-18261
Published: April 25, 2018
Vulnerability identifier: #VU12151
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-2017-18261
CWE-ID: CWE-674
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 the arch_timer_reg_read_stable macro in the source code file arch/arm64/include/asm/arch_timer.h due to an infinite recursion memory error on systems with the arch timer erratum workaround implemented. A local attacker can access the system and write to a file under /sys/kernel/debug in a specific scenario, trigger excessive resource consumption and cause the service to crash.
The weakness exists in the arch_timer_reg_read_stable macro in the source code file arch/arm64/include/asm/arch_timer.h due to an infinite recursion memory error on systems with the arch timer erratum workaround implemented. A local attacker can access the system and write to a file under /sys/kernel/debug in a specific scenario, trigger excessive resource consumption and cause the service to crash.
How to mitigate CVE-2017-18261
Update to version 4.13.