CVE-2010-4158

Published: 30 December 2010

The sk_run_filter function in net/core/filter.c in the Linux kernel before 2.6.36.2 does not check whether a certain memory location has been initialized before executing a (1) BPF_S_LD_MEM or (2) BPF_S_LDX_MEM instruction, which allows local users to obtain potentially sensitive information from kernel stack memory via a crafted socket filter.

From the Ubuntu Security Team

Dan Rosenberg discovered that the socket filters did not correctly initialize structure memory. A local attacker could create malicious filters to read portions of kernel stack memory, leading to a loss of privacy.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Released (2.6.24-29.87)
	karmic	Released (2.6.31-23.74)
	lucid	Released (2.6.32-30.59)
	maverick	Released (2.6.35-25.43)
	natty	Released (2.6.37-5.13)
	upstream	Released (2.6.37~rc2)
	Patches: upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=57fe93b374a6b8711995c2d466c502af9f3a08bb
linux-ec2 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Released (2.6.31-308.28)
	lucid	Released (2.6.32-314.27)
	maverick	Ignored (end of life)
	natty	Does not exist
	upstream	Ignored
linux-fsl-imx51 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Ignored (end of life)
	lucid	Released (2.6.31-610.27)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.37~rc2)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Does not exist
	lucid	Released (2.6.35-25.44~lucid1)
	maverick	Does not exist
	natty	Does not exist
	upstream	Ignored
linux-lts-backport-natty Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Not vulnerable (2.6.38-1.27~lucid1)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.37~rc2)
linux-mvl-dove Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Ignored (end of life)
	lucid	Released (2.6.32-216.33)
	maverick	Released (2.6.32-416.33)
	natty	Does not exist
	upstream	Ignored
linux-source-2.6.15 Launchpad, Ubuntu, Debian	dapper	Released (2.6.15-57.94)
	hardy	Does not exist
	karmic	Does not exist
	lucid	Does not exist
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.37~rc2)
linux-ti-omap4 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Does not exist
	lucid	Does not exist
	maverick	Released (2.6.35-903.22)
	natty	Not vulnerable (2.6.38-1201.2)
	upstream	Ignored

References

Bugs

https://bugzilla.redhat.com/show_bug.cgi?id=651698

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