3.3 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
6.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.7%
Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the approach was not sufficient.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | xen | < 4.17.3+10-g091466ba55-1~deb12u1 | xen_4.17.3+10-g091466ba55-1~deb12u1_all.deb |
Debian | 11 | all | xen | <= 4.14.6-1 | xen_4.14.6-1_all.deb |
Debian | 999 | all | xen | < 4.17.3+10-g091466ba55-1 | xen_4.17.3+10-g091466ba55-1_all.deb |
Debian | 13 | all | xen | < 4.17.3+10-g091466ba55-1 | xen_4.17.3+10-g091466ba55-1_all.deb |
3.3 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
6.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.7%