Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2009-3616

Use After Free

Published: Oct 23, 2009 | Modified: Apr 09, 2025
CVSS 3.x
9.9
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 2.x
8.5 HIGH
AV:N/AC:M/Au:S/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
HIGH
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2009-3616
CWEhttps://cwe.mitre.org/data/definitions/416.html

Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting during data transfer, (2) sending a message using incorrect integer data types, or (3) using the Fuzzy Screen Mode protocol, related to double free vulnerabilities.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
QemuQemu*0.10.6 (including)
QemuUbuntujaunty*
QemuUbuntuupstream*
Qemu-kvmUbuntuupstream*

Potential Mitigations

References

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