Vulnerability identifier: #VU67477
Vulnerability risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-362
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in the Linux kernel's IP framework for transforming packets (XFRM subsystem) when multiple calls to xfrm_probe_algs occurred simultaneously. A local user can exploit the race and escalate privileges on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel:
External links
http://github.com/torvalds/linux/commit/ba953a9d89a00c078b85f4b190bc1dde66fe16b5
http://lore.kernel.org/all/YtoWqEkKzvimzWS5@gondor.apana.org.au/T/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F3MYP7WX4PNE6RCITVXA43CECBZT4CL6/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JKVA75UHKVOHNOEPCLUHTFGWCOOUBDM3/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PEQYVCNYUWB4CJ2YRAYNF2GGFQ7SUYC4/
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.