VulnerabilityModified
CVE-2021-3638
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU.
MEDIUM 6.5EPSS 0.43%
Does this matter?
Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own.
Description
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 0.43% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- qemu/qemu · fedoraproject/fedora
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1979858Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/Mailing List, Third Party Advisory
- https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.htmlExploit, Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220407-0003/Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3638Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1979858Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/Mailing List, Third Party Advisory
- https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.htmlExploit, Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220407-0003/Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3638Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.