ID |
CVE-2021-28039
|
Summary |
An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG. |
References |
|
Vulnerable Configurations |
-
cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*
-
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:x86:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:x86:*
-
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
-
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
|
CVSS |
Base: | 2.1 (as of 21-11-2024 - 05:59) |
Impact: | |
Exploitability: | |
|
CWE |
CWE-131 |
CAPEC |
-
Buffer Overflow via Parameter Expansion
In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
-
Overflow Buffers
Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice.
|
Access |
Vector | Complexity | Authentication |
LOCAL |
LOW |
NONE |
|
Impact |
Confidentiality | Integrity | Availability |
NONE |
NONE |
PARTIAL |
|
cvss-vector
via4
|
AV:L/AC:L/Au:N/C:N/I:N/A:P
|
Last major update |
21-11-2024 - 05:59 |
Published |
05-03-2021 - 18:15 |
Last modified |
21-11-2024 - 05:59 |