CVE-2011-1090

Published: 9 May 2011

The __nfs4_proc_set_acl function in fs/nfs/nfs4proc.c in the Linux kernel before 2.6.38 stores NFSv4 ACL data in memory that is allocated by kmalloc but not properly freed, which allows local users to cause a denial of service (panic) via a crafted attempt to set an ACL.

From the Ubuntu Security Team

Neil Horman discovered that NFSv4 did not correctly handle certain orders of operation with ACL data. A remote attacker with access to an NFSv4 mount could exploit this to crash the system, leading to a denial of service.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Released (2.6.24-29.92)
	lucid	Released (2.6.32-33.64)
	maverick	Released (2.6.35-30.55)
	natty	Released (2.6.38-6.33)
	upstream	Released (2.6.38~rc8)
	Patches: upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e9e3d724e2145f5039b423c290ce2b2c3d8f94bc
linux-ec2 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	lucid	Released (2.6.32-317.32)
	maverick	Ignored (binary supplied by "linux" now)
	natty	Does not exist
	upstream	Released (2.6.38~rc8)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	lucid	Released (2.6.31-610.27)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.38~rc8)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	lucid	Released (2.6.35-30.55~lucid1)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.38~rc8)
linux-lts-backport-natty Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Not vulnerable (2.6.38-7.35~lucid1)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.38~rc8)
linux-mvl-dove Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	lucid	Released (2.6.32-217.34)
	maverick	Released (2.6.32-417.34)
	natty	Does not exist
	upstream	Released (2.6.38~rc8)
linux-source-2.6.15 Launchpad, Ubuntu, Debian	dapper	Ignored (reached end-of-life)
	hardy	Does not exist
	lucid	Does not exist
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.38~rc8)
linux-ti-omap4 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	lucid	Does not exist
	maverick	Released (2.6.35-903.23)
	natty	Released (2.6.38-1205.6)
	upstream	Released (2.6.38~rc8)

References

Bugs

https://launchpad.net/bugs/800775

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