CVE-2009-2909

CVE-2009-2909 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-189.

Key facts

Description

Integer signedness error in the ax25_setsockopt function in net/ax25/af_ax25.c in the ax25 subsystem in the Linux kernel before 2.6.31.2 allows local users to cause a denial of service (OOPS) via a crafted optlen value in an SO_BINDTODEVICE operation.

Frequently asked questions

What is CVE-2009-2909?
Integer signedness error in the ax25_setsockopt function in net/ax25/af_ax25.c in the ax25 subsystem in the Linux kernel before 2.6.31.2 allows local users to cause a denial of service (OOPS) via a crafted optlen value in an SO_BINDTODEVICE operation.
How severe is CVE-2009-2909?
CVE-2009-2909 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2009-2909 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2909?
CVE-2009-2909 primarily affects Linux Linux Kernel. In total, 337 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2909?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2909 published?
CVE-2009-2909 was published on 2009-10-20 and last updated on 2026-06-16.

References

Affected products (337)

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