CVE-2020-11884 Information

Description

In the Linux kernel through 5.6.7 on the s390 platform code execution may occur because of a race condition as demonstrated by code in enable_sacf_uaccess in arch/s390/lib/uaccess.c that fails to protect against a concurrent page table upgrade aka CID-3f777e19d171. A crash could also occur.

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574f https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TZBP2HINNAX7HKHCOUMIFVQPV6GWMCZ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AQUVKC3IPUC5B374VVAZV4J5P3GAUGSW/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKVJMS4GQRH5SO35WM5GINCFAGXQ3ZW6/ https://security.netapp.com/advisory/ntap-20200608-0001/ https://usn.ubuntu.com/4342-1/ https://usn.ubuntu.com/4343-1/ https://usn.ubuntu.com/4345-1/ https://www.debian.org/security/2020/dsa-4667

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0