A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality integrity as well as system availability.
| Reporter | Title | Published | Views | Family All 112 |
|---|---|---|---|---|
 | CVE-2021-20181 | 13 May 202116:15 | – | attackerkb |
 | CVE-2021-20181 | 13 May 202115:24 | – | alpinelinux |
 | Astra Linux – Vulnerability in Qemu | 20 May 202605:53 | – | astralinux |
 | The vulnerability of the 9pfs server emulator’s hardware emulation implementation, based on QEMU, arises from the use of memory after it is freed. This allows a perpetrator to gain access to confidential data, compromise its integrity, and cause service failures. | 2 Nov 202100:00 | – | bdu_fstec |
 | CVE-2021-20181 affecting package qemu-kvm 4.2.0-48 | 8 Jul 202121:56 | – | cbl_mariner |
 | CVE-2021-20181 | 24 Oct 202107:38 | – | circl |
 | QEMU 竞争条件问题漏洞 | 8 Feb 202100:00 | – | cnnvd |
 | QEMU competitive conditions loophole (CNVD-2021-39777) | 8 Mar 202100:00 | – | cnvd |
 | CVE-2021-20181 | 13 May 202115:24 | – | cve |
 | CVE-2021-20181 | 13 May 202115:24 | – | cvelist |
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05 Jun 2021 07:00Current
7High risk
Vulners AI Score7
CVSS 26.9
CVSS 3.17.5
EPSS0.0032