CVE-2009-4536

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-01-12 · updated 2026-06-16
Weakness: CWE-189

Description

drivers/net/e1000/e1000_main.c in the e1000 driver in the Linux kernel 2.6.32.3 and earlier handles Ethernet frames that exceed the MTU by processing certain trailing payload data as if it were a complete frame, which allows remote attackers to bypass packet filters via a large packet with a crafted payload. NOTE: this vulnerability exists because of an incorrect fix for CVE-2009-1385.

Affected products

Debian Linux: 4.0, 5.0
Linux kernel: through 2.6.32.3

References

http://blog.c22.cc/2009/12/27/26c3-cat-procsysnetipv4fuckups/
http://events.ccc.de/congress/2009/Fahrplan/events/3596.en.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-February/035159.html
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00000.html
http://marc.info/?t=126203102000001&r=1&w=2
http://secunia.com/advisories/35265
http://secunia.com/advisories/38031

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