CVE-2010-2248

Published: 7 September 2010

fs/cifs/cifssmb.c in the CIFS implementation in the Linux kernel before 2.6.34-rc4 allows remote attackers to cause a denial of service (panic) via an SMB response packet with an invalid CountHigh value, as demonstrated by a response from an OS/2 server, related to the CIFSSMBWrite and CIFSSMBWrite2 functions.

From the Ubuntu Security Team

Suresh Jayaraman discovered that CIFS did not correctly validate certain response packats. A remote attacker could send specially crafted traffic that would crash the system, leading to a denial of service.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Released (2.6.24-28.80)
	jaunty	Released (2.6.28-19.66)
	karmic	Released (2.6.31-22.67)
	lucid	Released (2.6.32-23.37)
	maverick	Not vulnerable
	upstream	Released (2.6.34-rc4)
	Patches: upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6513a81e9325d712f1bfb9a1d7b750134e49ff18 hardy: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-2248/patches/hardy/linux/0001-cifs-Fix-a-kernel-BUG-with-remote-OS-2-server-try-3.txt jaunty: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-2248/patches/jaunty/linux/0001-cifs-Fix-a-kernel-BUG-with-remote-OS-2-server-try-3.txt karmic: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-2248/patches/karmic/linux/0001-cifs-Fix-a-kernel-BUG-with-remote-OS-2-server-try-3.txt
linux-ec2 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Released (2.6.31-307.21)
	lucid	Released (2.6.32-309.18)
	maverick	Ignored (binary supplied by "linux" now)
	upstream	Needs triage
linux-fsl-imx51 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Released (2.6.31-112.30)
	lucid	Released (2.6.31-608.22)
	maverick	Does not exist
	upstream	Needs triage
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
	upstream	Needs triage
linux-source-2.6.15 Launchpad, Ubuntu, Debian	dapper	Released (2.6.15-55.89)
	hardy	Does not exist
	jaunty	Does not exist
	karmic	Does not exist
	lucid	Does not exist
	maverick	Does not exist
	upstream	Needs triage
	Patches: dapper: http://chinstrap.ubuntu.com/~bradf/CVEs/CVE-2010-2248/patches/dapper/linux/0001-cifs-Fix-a-kernel-BUG-with-remote-OS-2-server-try-3.txt

References

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