Integer overflow in Linux kernel - CVE-2020-12826
Published: May 21, 2020
Vulnerability identifier: #VU28168
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-12826
CWE-ID: CWE-190
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 user to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in "exec_id" in "include/linux/sched.h". A local user can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2020-12826
Install updates from vendor's website.
Sources
- https://bugzilla.redhat.com/show_bug.cgi?id=1822077
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5
- https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef
- https://lists.openwall.net/linux-kernel/2020/03/24/1803
- https://www.openwall.com/lists/kernel-hardening/2020/03/25/1