Out-of-bounds write in Linux kernel - CVE-2020-12659
Published: May 21, 2020
Vulnerability identifier: #VU28166
CSH Severity: Low
CVSSv4.0: 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-2020-12659
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in "xdp_umem_reg" in "net/xdp/xdp_umem.c" file. A local user can trigger out-of-bounds write and execute arbitrary code on the target system.
Remediation
Install updates from vendor's website.
External links
- https://bugzilla.kernel.org/show_bug.cgi?id=207225
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.7
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99e3a236dd43d06c65af0a2ef9cb44306aef6e02
- https://github.com/torvalds/linux/commit/99e3a236dd43d06c65af0a2ef9cb44306aef6e02