CVE-2021-3638
MEDIUM
6.5
CVSS Score
Published: March 3, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:05 AM UTC
2 products affected across 2 vendorsFedoraQEMU
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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
- https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html
References (6)
Issue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1979858Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/ExploitMailing ListPatchThird Party Advisory
Source: [email protected]
https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.htmlThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220407-0003/CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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