Vulnerabilities > CVE-2021-30178 - NULL Pointer Dereference vulnerability in multiple products

CVSS 5.5 - MEDIUM

Attack vector

LOCAL

Attack complexity

LOW

Privileges required

LOW

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

local

low complexity

linux

fedoraproject

CWE-476

NVD

Published: 2021-04-07

Updated: 2023-11-07

Summary

An issue was discovered in the Linux kernel through 5.11.11. synic_get in arch/x86/kvm/hyperv.c has a NULL pointer dereference for certain accesses to the SynIC Hyper-V context, aka CID-919f4ebc5987.

Vulnerable Configurations

Part	Description	Count
OS	Linux Linux Linux Kernel 5.0 Linux Linux Kernel 5.5 Linux Linux Kernel 5.9.6	3
OS	Fedoraproject Fedoraproject Fedora 32 Fedoraproject Fedora 33 Fedoraproject Fedora 34	3

Common Weakness Enumeration (CWE)

CWE-476 - NULL Pointer Dereference

References

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=919f4ebc598701670e80e31573a58f1f2d2bf918
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5YFGIIF24475A2LNW3UWHW2SNCS3G7M/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGQDVYCDM3F5VXUZIADIV2ERL3AJXNJS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IJ5GEETMX3ERQ4DF3GSS2XPNSOOK44OB/