CVE-2010-4165

Published: 22 November 2010

The do_tcp_setsockopt function in net/ipv4/tcp.c in the Linux kernel before 2.6.37-rc2 does not properly restrict TCP_MAXSEG (aka MSS) values, which allows local users to cause a denial of service (OOPS) via a setsockopt call that specifies a small value, leading to a divide-by-zero error or incorrect use of a signed integer.

From the Ubuntu security team

Steve Chen discovered that setsockopt did not correctly check MSS values. A local attacker could make a specially crafted socket call to crash the system, leading to a denial of service.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)






	Patches: Upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7a1abd08d52fdeddb3e9a5a33f2f15cc6a5674d2 Hardy: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-4165/patches/hardy/linux/0001-tcp-Increase-TCP_MAXSEG-socket-option-minimum.txt Karmic: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-4165/patches/karmic/linux/0001-tcp-Increase-TCP_MAXSEG-socket-option-minimum.txt Lucid: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-4165/patches/lucid/linux/0001-tcp-Increase-TCP_MAXSEG-socket-option-minimum.txt Maverick: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-4165/patches/maverick/linux/0001-tcp-Increase-TCP_MAXSEG-socket-option-minimum.txt
linux-ec2 Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)






linux-fsl-imx51 Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)






linux-lts-backport-maverick Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)






linux-lts-backport-natty Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)






linux-mvl-dove Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)






linux-source-2.6.15 Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)






	Patches: Dapper: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-4165/patches/dapper/linux/0001-tcp-Increase-TCP_MAXSEG-socket-option-minimum.txt
linux-ti-omap4 Launchpad, Ubuntu, Debian	Upstream	Released (2.6.37~rc2)

Notes

Author	Note
mdeslaur	introduced by http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f5fff5dc8a7a3f395b0525c02ba92c95d42b7390
jdstrand	commit introduced in 2008/09/21. Dapper not affected 2.6.15-57.94. Marking back to 'needed'

References

Bugs

https://bugzilla.redhat.com/show_bug.cgi?id=652508

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