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CVE-2009-3623

Published: 30 October 2009

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.

Priority

Medium

Status

Package Release Status
linux-source-2.6.15
Launchpad, Ubuntu, Debian
upstream
Released (2.6.32~rc1)
dapper Not vulnerable

hardy Does not exist

intrepid Does not exist

jaunty Does not exist

karmic Does not exist

linux
Launchpad, Ubuntu, Debian
upstream
Released (2.6.32~rc1)
dapper Does not exist

hardy Not vulnerable

intrepid Not vulnerable

jaunty Not vulnerable

karmic
Released (2.6.31-16.52)
Patches:
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