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Linux Kernel Multiple Vulnerabilities

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Release Date:  2010-09-22    Last Update:  2011-04-18    Views:  3,470

Secunia Advisory SA41493

Where:

Local system

Impact:

Hijacking, Exposure of sensitive information, DoS

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service), conduct session hijacking attacks, or disclose sensitive information.

1) Signedness errors within the "rose_bind()" and "rose_connect()" functions in net/rose/af_rose.c can be exploited to bypass boundary checks and e.g. cause a memory corruption via the "rose_getname()" function.

Successful exploitation of these vulnerabilities may require that a ROSE device is present.

2) An input validation error in "pkt_find_dev_from_minor()" in drivers/block/pktcdvd.c can be exploited to trigger an out-of-bounds read and disclose arbitrary kernel memory or cause a crash.

Successful exploitation of this vulnerability requires permissions to open "/dev/pktcdvd/control".

3) The "snd_hdsp_hwdep_ioctl()" function in sound/pci/rme9652/hdsp.c, the "snd_hdspm_hwdep_ioctl()" function in sound/pci/rme9652/hdspm.c, and the "sisfb_ioctl()" function in drivers/video/sis/sis_main.c are not properly initializing all members of certain structures before copying them to userspace, which can be exploited to disclose kernel stack memory by sending certain IOCTLs.

4) The "ethtool_get_rxnfc()" function in net/core/ethtool.c does not properly clear kernel heap memory, which can be exploited to disclose potentially sensitive information.

5) An error within the handling of CIFS sessions can be exploited to e.g. hijack another user's CIFS session.


Solution:
Update to version 2.6.36.

Provided and/or discovered by:
1, 2, 3) Dan Rosenberg
4) Kees Cook
5) Disclosed in GIT commits.

Original Advisory:
http://www.openwall.com/lists/oss-security/2010/09/21/1
http://marc.info/?l=linux-netdev&m=128502238927086&w=2
http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commitdiff;h=9828e6e6e3f19efcb476c567b9999891d051f52f
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=252a52aa4fa22a668f019e55b3aac3ff71ec1c29
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ae6df5f96a51818d6376da5307d773baeece4014
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.36-rc6
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=4ff67b720c02c36e54d55b88c2931879b7db1cd2
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=fc87a40677bbe0937e2ff0642c7e83c9a4813f3d
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=24e6cf92fde1f140d8eb0bf7cd24c2c78149b6b2

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Linux Kernel Multiple Vulnerabilities

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