SB2015120706 - Fedora 23 update for xen
Published: December 7, 2015 Updated: April 24, 2025
Security Bulletin ID
SB2015120706
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2015-7504)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a malicious guest to escalate privileges on the system.
The vulnerability exists due to a boundary error in the pcnet_receive() function in hw/net/pcnet.c in QEMU. A malicious guest can use a series of packets in loopback mode to trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.