CVE-2009-3623

Publication date 30 October 2009

Last updated 24 July 2024

Ubuntu priority

The lookup_cb_cred function in fs/nfsd/nfs4callback.c in the nfsd4 subsystem in the Linux kernel before 2.6.31.2 attempts to access a credentials cache even when a client specifies the AUTH_NULL authentication flavor, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an NFSv4 mount request.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
linux	9.10 karmic	Fixed 2.6.31-16.52
	9.04 jaunty	Not affected
	8.10 intrepid	Not affected
	8.04 LTS hardy	Not affected
	6.06 LTS dapper	Not in release
linux-source-2.6.15	9.10 karmic	Not in release
	9.04 jaunty	Not in release
	8.10 intrepid	Not in release
	8.04 LTS hardy	Not in release
	6.06 LTS dapper	Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
linux	Upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=886e3b7fe6054230c89ae078a09565ed183ecc73 Upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=80fc015bdfe1f5b870c1e1ee02d78e709523fee7

CVE-2009-3623

Status

Patch details

References

Related Ubuntu Security Notices (USN)

Other references