VulnerabilityModified
CVE-2020-27821
This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations.
MEDIUM 6.0EPSS 0.36%
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.
- CVSS 3.1
- 6.0 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 0.36% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- qemu/qemu · debian/debian linux
- Source
- secalert@redhat.com
References
- http://www.openwall.com/lists/oss-security/2020/12/16/6Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1902651Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210115-0006/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/12/16/6Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1902651Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210115-0006/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.