CVE-2009-4272
The MITRE CVE dictionary describes this issue as:
A certain Red Hat patch for net/ipv4/route.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (deadlock) via crafted packets that force collisions in the IPv4 routing hash table, and trigger a routing "emergency" in which a hash chain is too long. NOTE: this is related to an issue in the Linux kernel before 2.6.31, when the kernel routing cache is disabled, involving an uninitialized pointer and a panic.
Find out more about CVE-2009-4272 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4 and Red Hat Enterprise MRG. Shipped kernels do not include upstream commits c6153b5b and 1080d709 that introduced the problem.
It was addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2010-0046.html
CVSS v2 metrics
| Base Score | 7.8 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:N/C:N/I:N/A:C |
| Access Vector | Network |
| Access Complexity | Low |
| 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 Enterprise Virtualization Hypervisor 5 (rhev-hypervisor) | RHSA-2010:0095 | 2010-02-09 |
| Red Hat Enterprise Linux 5 (kernel) | RHSA-2010:0046 | 2010-01-19 |
CVE description copyright © 2017, The MITRE Corporation