CVE-2009-3002

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-08-28 · updated 2026-06-16
Weakness: CWE-200

Description

The Linux kernel before 2.6.31-rc7 does not initialize certain data structures within getname functions, which allows local users to read the contents of some kernel memory locations by calling getsockname on (1) an AF_APPLETALK socket, related to the atalk_getname function in net/appletalk/ddp.c; (2) an AF_IRDA socket, related to the irda_getname function in net/irda/af_irda.c; (3) an AF_ECONET socket, related to the econet_getname function in net/econet/af_econet.c; (4) an AF_NETROM socket, related to the nr_getname function in net/netrom/af_netrom.c; (5) an AF_ROSE socket, related to the rose_getname function in net/rose/af_rose.c; or (6) a raw CAN socket, related to the raw_getname function in net/can/raw.c.

Affected products

Canonical Ubuntu Linux: 6.06, 8.04, 8.10, 9.04
Linux kernel: before 2.6.31; 2.6.31, 2.6.31-rc1, 2.6.31-rc2, 2.6.31-rc3, 2.6.31-rc4, 2.6.31-rc5 (+1) — fixed in 2.6.31

How to fix

Upgrade to a fixed version: Linux kernel 2.6.31. Check the vendor advisory for mitigations.

References

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