CVE-2021-4032
Summary
| CVE | CVE-2021-4032 |
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| State | PUBLIC |
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| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2022-01-21 19:15:00 UTC |
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| Updated | 2022-01-28 14:52:00 UTC |
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| Description | A vulnerability was found in the Linux kernel's KVM subsystem in arch/x86/kvm/lapic.c kvm_free_lapic when a failure allocation was detected. In this flaw the KVM subsystem may crash the kernel due to mishandling of memory errors that happens during VCPU construction, which allows an attacker with special user privilege to cause a denial of service. This flaw affects kernel versions prior to 5.15 rc7. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
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| LKML: Steven Rostedt: Re: WARNING in __static_key_slow_dec_deferred |
MISC |
lkml.org |
|
| 2027403 – (CVE-2021-4032) CVE-2021-4032 kernel: kvm: mishandling of memory error during VCPU construction can lead to DoS |
MISC |
bugzilla.redhat.com |
|
| kernel/git/torvalds/linux.git - Linux kernel source tree |
MISC |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 900616 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8323)
- 905798 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8323-1)
