Resource management error in Linux kernel - CVE-2020-11669
Published: April 17, 2020 / Updated: May 30, 2020
Vulnerability identifier: #VU26992
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-11669
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management issue. A local user of guest operating system can perform a denial of service attack against the POWER9 KVM host.
Affected software
Linux kernel
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power 9
kernel-alt (Red Hat package)
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power 9
kernel-alt (Red Hat package)
How to mitigate CVE-2020-11669
Install updates from vendor's website.
Linux kernel - addressed in versions 4.14.177, 4.19.116, 5.2
kernel-alt (Red Hat package) - update to 4.14.0-115.36.1.el7a
kernel-alt (Red Hat package) - update to 4.14.0-115.36.1.el7a
External References
- http://www.openwall.com/lists/oss-security/2020/04/15/1
- http://www.openwall.com/lists/oss-security/2020/04/15/2
- http://www.openwall.com/lists/oss-security/2020/04/16/2
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=53a712bae5dd919521a58d7bad773b949358add0
- https://github.com/torvalds/linux/commit/53a712bae5dd919521a58d7bad773b949358add0
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.116
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.177