CVE-2009-4537

Summary

CVECVE-2009-4537
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2010-01-12 17:30:00 UTC
Updated2026-04-23 00:35:47 UTC
Descriptiondrivers/net/r8169.c in the r8169 driver in the Linux kernel 2.6.32.3 and earlier does not properly check the size of an Ethernet frame that exceeds the MTU, which allows remote attackers to (1) cause a denial of service (temporary network outage) via a packet with a crafted size, in conjunction with certain packets containing A characters and certain packets containing E characters; or (2) cause a denial of service (system crash) via a packet with a crafted size, in conjunction with certain packets containing '\0' characters, related to the value of the status register and erroneous behavior associated with the RxMaxSize register. NOTE: this vulnerability exists because of an incorrect fix for CVE-2009-1389.

Risk And Classification

Primary CVSS: v2.0 7.8 from [email protected]

AV:N/AC:L/Au:N/C:N/I:N/A:C

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 5.0 All All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
SUSE update for kernel - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Linux Kernel RTL8169 NIC 'RxMaxSize' Frame Size Remote Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
oss-security - Re: CVE requests - kernel security regressions for CVE-2009-1385/and -1389 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Bug 550907 – CVE-2009-4537 kernel: r8169 issue reported at 26c3 af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com Third Party Advisory, VDB Entry
marc.info af854a3a-2127-422b-91ae-364da2661108 marc.info Mailing List, Third Party Advisory
Webmail - OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Third Party Advisory
Security Announcement af854a3a-2127-422b-91ae-364da2661108 www.novell.com Third Party Advisory
Linux Kernel Input Validation Flaw in Realtek r8169 Ethernet Driver Lets Remote Users Deny Service - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 securitytracker.com Third Party Advisory, VDB Entry
26C3: cat /proc/sys/net/ipv4/fuckups af854a3a-2127-422b-91ae-364da2661108 events.ccc.de Third Party Advisory
Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
Debian -- Security Information -- DSA-2053-1 linux-2.6 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
Debian update for linux-2.6 - Advisories - Community af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
26C3: cat /proc/sys/net/ipv4/fuckups « ©атсн²² (in)sесuяitу af854a3a-2127-422b-91ae-364da2661108 blog.c22.cc Third Party Advisory
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
oss-security - Re: CVE requests - kernel security regressions for CVE-2009-1385/and -1389 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
'[PATCH RFC] r8169: straighten out overlength frame detection' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Mailing List, Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
[security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:20 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
[SECURITY] Fedora 12 Update: kernel-2.6.31.12-174.2.19.fc12 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
Red Hat update for kernel - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
rhn.redhat.com | Red Hat Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
Red Hat update for the kernel - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
Security Advisory SA40645 - SUSE update for kernel - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Third Party Advisory
Dan Kaminsky on Twitter: "Fabian Yamaguchi's #26c3 talk was epic. Squid doesn't DNS randomize, Gigabit drivers that crash on frames of magic sizes, more." af854a3a-2127-422b-91ae-364da2661108 twitter.com Third Party Advisory
rhn.redhat.com | Red Hat Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
oss-security - CVE requests - kernel security regressions for CVE-2009-1385/and -1389 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report