CVE-2009-4272
Fixed in a distro release EPSS 11%
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.
Products: linux_kernel, redhat virtualization, redhat enterprise_linux_desktop, redhat enterprise_linux_eus, redhat enterprise_linux_server, redhat enterprise_linux_workstation
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-PAE | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-PAE-debuginfo | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-PAE-devel | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-debug | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-debug-debuginfo | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-debug-devel | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-debuginfo | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-debuginfo-common | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-devel | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-doc | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-kdump | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-kdump-debuginfo | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-kdump-devel | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-xen | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-xen-debuginfo | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | kernel-xen-devel | 0:2.6.18-164.11.1.el5 |
| Red Hat Enterprise Linux 5 | rhev-hypervisor | 0:5.4-2.1.8.el5_4rhev2_1 |
| Red Hat Enterprise Linux 5 | rhev-hypervisor-pxe | 0:5.4-2.1.8.el5_4rhev2_1 |