Ubuntu.comUB:CVE-2023-34326CVE-2023-34326
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
9.0%
The caching invalidation guidelines from the AMD-Vi specification
(48882—Rev 3.07-PUB—Oct 2022) is incorrect on some hardware, as devices
will malfunction (see stale DMA mappings) if some fields of the DTE are
updated but the IOMMU TLB is not flushed. Such stale DMA mappings can point
to memory ranges not owned by the guest, thus allowing access to unindented
memory regions.
Notes
| Author | Note |
|---|---|
| mdeslaur | hypervisor packages are in universe. For issues in the hypervisor, add appropriate tags to each section, ex: Tags_xen: universe-binary |
Related
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
9.0%