CVE-2010-3296

Published: 30 September 2010

The cxgb_extension_ioctl function in drivers/net/cxgb3/cxgb3_main.c in the Linux kernel before 2.6.36-rc5 does not properly initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via a CHELSIO_GET_QSET_NUM ioctl call.

From the Ubuntu Security Team

Dan Rosenberg discovered that several network ioctls did not clear kernel memory correctly. A local user could exploit this to read kernel stack memory, leading to a loss of privacy.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Released (2.6.24-28.82)
	jaunty	Ignored (reached end-of-life)
	karmic	Released (2.6.31-22.70)
	lucid	Released (2.6.32-26.46)
	maverick	Released (2.6.35-23.36)
	natty	Not vulnerable (2.6.37-2.9)
	upstream	Released (2.6.36~rc5)
	Patches: upstream: http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commit;h=49c37c0334a9b85d30ab3d6b5d1acb05ef2ef6de hardy: http://chinstrap.ubuntu.com/~ogasawara/CVEs/CVE-2010-3296/patches/hardy/linux/0001-drivers-net-cxgb3-cxgb3_main.c-prevent-reading-uniniti.txt karmic: http://chinstrap.ubuntu.com/~ogasawara/CVEs/CVE-2010-3296/patches/karmic/linux/0001-drivers-net-cxgb3-cxgb3_main.c-prevent-reading-uniniti.txt lucid: http://chinstrap.ubuntu.com/~ogasawara/CVEs/CVE-2010-3296/patches/lucid/linux/0001-drivers-net-cxgb3-cxgb3_main.c-prevent-reading-uniniti.txt maverick: http://chinstrap.ubuntu.com/~ogasawara/CVEs/CVE-2010-3296/patches/maverick/linux/0001-drivers-net-cxgb3-cxgb3_main.c-prevent-reading-uniniti.txt
linux-ec2 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	jaunty	Does not exist
	karmic	Released (2.6.31-307.23)
	lucid	Released (2.6.32-310.19)
	maverick	Ignored (binary supplied by "linux" now)
	natty	Does not exist
	upstream	Released (2.6.36~rc5)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Released (2.6.31-112.30)
	lucid	Released (2.6.31-608.21)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.36~rc5)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	jaunty	Does not exist
	karmic	Does not exist
	lucid	Released (2.6.35-23.40~lucid1)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.36~rc5)
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 (2.6.36~rc5)
linux-mvl-dove Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Ignored (abandonded branch)
	lucid	Released (2.6.32-213.29)
	maverick	Released (2.6.32-414.30)
	natty	Does not exist
	upstream	Released (2.6.36~rc5)
linux-source-2.6.15 Launchpad, Ubuntu, Debian	dapper	Not vulnerable
	hardy	Does not exist
	jaunty	Does not exist
	karmic	Does not exist
	lucid	Does not exist
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.36~rc5)
linux-ti-omap4 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Does not exist
	lucid	Does not exist
	maverick	Released (2.6.35-903.23)
	natty	Not vulnerable (2.6.38-1201.2)
	upstream	Released (2.6.36~rc5)

References

Bugs

https://bugzilla.redhat.com/show_bug.cgi?id=633149

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