Security restrictions bypass in Linux kernel - CVE-2014-9870
Published: August 6, 2016 / Updated: November 28, 2016
Vulnerability identifier: #VU95710
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2014-9870
CWE-ID: CWE-264
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 non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to security restrictions bypass error within the arm_syscall() and get_tp_trap() functions in arch/arm/kernel/traps.c, within the arch_ptrace() function in arch/arm/kernel/ptrace.c, within the copy_thread() function in arch/arm/kernel/process.c, within the entry() function in arch/arm/kernel/entry-armv.s. A local non-authenticated attacker can execute arbitrary code.
How to mitigate CVE-2014-9870
Install update from vendor's repository.
Sources
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a4780adeefd042482f624f5e0d577bf9cdcbb760
- http://source.android.com/security/bulletin/2016-08-01.html
- http://www.securityfocus.com/bid/92219
- https://github.com/torvalds/linux/commit/a4780adeefd042482f624f5e0d577bf9cdcbb760
- https://source.codeaurora.org/quic/la/kernel/msm/commit/?id=4f57652fcd2dce7741f1ac6dc0417e2f265cd1de