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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | linux-2.6 | 2.6.26-19lenny1 | DSA-1915-1 |
| Debian 4.0 | linux-2.6 | 2.6.18.dfsg.1-26etch1 | DSA-1929-1 |
| Debian 4.0 | linux-2.6.24 | 2.6.24-6~etchnhalf.9etch1 | DSA-1928-1 |
Advisories 3
- DSA-1929-1 linux-2.6 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1915-1 linux-2.6 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1928-1 linux-2.6.24 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=528887
- USN-864-1 vendor-advisory
- 37351 third-party-advisory
- 37075 third-party-advisory
- [oss-security] 20091007 More kernel CVE info (CVE-2009-2909) mailing-list
- SUSE-SA:2009:056 vendor-advisory
- [linux-kernel] 20091002 [071/136] net ax25: Fix signed comparison in the sockopt handler mailing-list
- 36635 vdb-entry
- FEDORA-2009-10525 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.2
- http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git%3Ba=commit%3Bh=b7058842c940ad2c08dd829b21e5c92ebe3b8758
- SUSE-SA:2009:054 vendor-advisory