Vulnerability in Linux Kernel
CVE-2009-4272
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.
EPSS: 0.111 (95.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux Linux_kernel — versions 2.6.18
- Redhat Enterprise_linux — versions 5.0
- Redhat Enterprise_linux_desktop — versions 5.0
- Redhat Enterprise_linux_eus — versions 5.4
- Redhat Enterprise_linux_server — versions 5.0
- Redhat Enterprise_linux_workstation — versions 5.0
- Redhat Virtualization — versions 5.0
- N/a — versions n/a
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_CONFIRM, Broken Link)
- secalert@redhat.com (x_refsource_CONFIRM, Broken Link)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Broken Link)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List)
- secalert@redhat.com (x_refsource_CONFIRM, Exploit, Issue Tracking)
- secalert@redhat.com (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_XF)
- secalert@redhat.com (Broken Link, x_refsource_OVAL, signature, vdb-entry)
- secalert@redhat.com (Broken Link, x_refsource_OVAL, signature, vdb-entry)
Frequently asked questions
- What is CVE-2009-4272?
- CVE-2009-4272 is a high-severity vulnerability in Linux Kernel, classified under Improper Locking. CVSS score: 7.5/10. Published 2010-01-27.
- How severe is CVE-2009-4272?
- High severity. CVSS v3 base score is 7.5 out of 10.