CVE-2011-4326
The MITRE CVE dictionary describes this issue as:
The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device.
Find out more about CVE-2011-4326 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat
Enterprise Linux 4 and 5 as they did not provide support for UDP Fragmentation Offload (UFO) functionality. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1465.html, and https://rhn.redhat.com/errata/RHSA-2012-0010.html.
CVSS v2 metrics
| Base Score | 7.1 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:N/I:N/A:C |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) | RHSA-2012:0010 | 2012-01-10 |
| Red Hat Enterprise Linux 6 (kernel) | RHSA-2011:1465 | 2011-11-22 |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected |
| Red Hat Enterprise Linux 5 | kernel | Not affected |
| Red Hat Enterprise Linux 4 | kernel | Not affected |
CVE description copyright © 2017, The MITRE Corporation