4.4 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
5.1%
If realloc(3) fails then libxl_list_cpupool will incorrectly return the now-free original pointer.
An attacker may be able to cause a multithreaded toolstack using this function to race against itself leading to heap corruption and a potential DoS.
Depending on the malloc implementation code execution cannot be ruled out.
The flaw is present in Xen 4.2 onwards.
Systems using the libxl toolstack library are vulnerable.