CVE-2021-30178 — NULL Pointer Dereference in Kernel

CWE-476 — NULL Pointer Dereference6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 70.08%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
Linux KernelFedoraproject FedoraDebian Linux+6 more
Timeline
PublishedApr 7
Latest updateMay 24

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages8 packages

▶NVDlinux/linux_kernel5.11.11
▶debiandebian/linux

Also affects: Fedora 32, 33, 34

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-5qhm-686w-6256: An issue was discovered in the Linux kernel through 5↗2022-05-24
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OSV
CVE-2021-30178: An issue was discovered in the Linux kernel through 5↗2021-04-07
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📋Vendor Advisories

3
Microsoft
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.↗2021-04-13
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Red Hat
kernel: NULL pointer dereference in synic_get function in arch/x86/kvm/hyperv.c for certain accesses to the SynIC Hyper-V context↗2021-02-26
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Debian
CVE-2021-30178: linux - An issue was discovered in the Linux kernel through 5.11.11. synic_get in arch/x...↗2021
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