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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.111 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.111 · newest: 0.111 · change: 0.000
Affected products
- Linux Kernel — versions 2.6.18
- Red Hat Enterprise Linux — versions 5.0
- Red Hat Enterprise Linux Desktop — versions 5.0
- Red Hat Enterprise Linux Eus — versions 5.4
- Red Hat Enterprise Linux Server — versions 5.0
- Red Hat Enterprise Linux Workstation — versions 5.0
- Red Hat Virtualization — versions 5.0
Weakness classification (CWE)
References
- git.kernel.org/ (Broken Link)
- git.kernel.org/ (Broken Link)
- support.avaya.com/css/P8/documents/100073666 (Third Party Advisory)
- www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31 (Broken Link)
- www.openwall.com/lists/oss-security/2010/01/20/1 (mailing-list, Mailing List)
- www.openwall.com/lists/oss-security/2010/01/20/6 (mailing-list, Mailing List)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Issue Tracking)
- exchange.xforce.ibmcloud.com/vulnerabilities/55808 (Third Party Advisory, VDB Entry, vdb-entry)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:11167 (Broken Link, signature, vdb-entry)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:7026 (Broken Link, 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.