CVE-2009-3612

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-10-19 · updated 2026-06-16
Weakness: CWE-200

Description

The tcf_fill_node function in net/sched/cls_api.c in the netlink subsystem in the Linux kernel 2.6.x before 2.6.32-rc5, and 2.4.37.6 and earlier, does not initialize a certain tcm__pad2 structure member, which might allow local users to obtain sensitive information from kernel memory via unspecified vectors. NOTE: this issue exists because of an incomplete fix for CVE-2005-4881.

Affected products

Canonical Ubuntu Linux: 6.06, 8.04, 8.10, 9.04, 9.10
Fedoraproject Fedora: 10
Linux kernel: through 2.4.37.6; from 2.6.0 before 2.6.32; 2.6.32, 2.6.32-rc1, 2.6.32-rc2, 2.6.32-rc3, 2.6.32-rc4 — fixed in 2.6.32
Opensuse: 11.0
SUSE Linux Enterprise Server 15 SP1: 10-sp2, 10-sp3
SUSE Linux Enterprise Server: 10-sp2, 10-sp3
SUSE Linux Enterprise Software Development Kit: 10-sp2, 10-sp3

How to fix

Upgrade to a fixed version: Linux kernel 2.6.32. Check the vendor advisory for mitigations.

References

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