CVE-2021-20181
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.3%
exploitation probability
0.3%top 73% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
n/a · qemuReferences
https://bugzilla.redhat.com/show_bug.cgi?id=1927007https://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlhttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlhttps://security.netapp.com/advisory/ntap-20210720-0009/https://www.zerodayinitiative.com/advisories/ZDI-21-159/