CVE-2010-4075

Published: 29 November 2010

The uart_get_count function in drivers/serial/serial_core.c in the Linux kernel before 2.6.37-rc1 does not properly initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via a TIOCGICOUNT ioctl call.

From the Ubuntu Security Team

Dan Rosenberg discovered that multiple terminal ioctls did not correctly initialize structure memory. A local attacker could exploit this to read portions of kernel stack memory, leading to a loss of privacy.

Notes

Author	Note
jdstrand	applied on dapper_linux-source-2.6.15 2.6.15-57.94, but not in changelog

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Released (2.6.24-29.87)
	karmic	Released (2.6.31-23.74)
	lucid	Released (2.6.32-30.59)
	maverick	Released (2.6.35-28.49)
	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=commit;h=d281da7ff6f70efca0553c288bb883e8605b3862
linux-ec2 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Released (2.6.31-308.28)
	lucid	Released (2.6.32-314.27)
	maverick	Ignored (end of life)
	natty	Does not exist
	upstream	Released (2.6.37~rc1)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	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-lts-backport-maverick Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Does not exist
	lucid	Released (2.6.35-28.50~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 (2.6.32-216.33)
	maverick	Released (2.6.32-416.33)
	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

Bugs

https://bugzilla.redhat.com/show_bug.cgi?id=648660

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›