CVE-2010-4242

Published: 10 January 2011

The hci_uart_tty_open function in the HCI UART driver (drivers/bluetooth/hci_ldisc.c) in the Linux kernel 2.6.36, and possibly other versions, does not verify whether the tty has a write operation, which allows local users to cause a denial of service (NULL pointer dereference) via vectors related to the Bluetooth driver.

From the Ubuntu Security Team

Alan Cox discovered that the HCI UART driver did not correctly check if a write operation was available. If the mmap_min-addr sysctl was changed from the Ubuntu default to a value of 0, a local attacker could exploit this flaw to gain root privileges.

Priority

Status

Package	Release	Status
linux-fsl-imx51 Launchpad, Ubuntu, Debian	hardy	Does not exist
	dapper	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~rc1)
linux Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Released (2.6.24-29.87)
	karmic	Released (2.6.31-23.74)
	lucid	Released (2.6.32-27.49)
	maverick	Released (2.6.35-25.43)
	natty	Not vulnerable (2.6.37-2.9)
	upstream	Released (2.6.37~rc1)
	Patches: upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=c19483cc5e56ac5e22dd19cf25ba210ab1537773
linux-ec2 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Released (2.6.31-308.28)
	lucid	Released (2.6.32-311.22)
	maverick	Ignored (end of life)
	natty	Does not exist
	upstream	Released (2.6.37~rc1)
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	Released (2.6.37~rc1)
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~rc1)
linux-mvl-dove Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Ignored (end of life)
	lucid	Released (2.6.32-213.29)
	maverick	Released (2.6.32-414.30)
	natty	Does not exist
	upstream	Released (2.6.37~rc1)
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~rc1)
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 (2.6.37~rc1)

References

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