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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

AuthorNote
jdstrand
applied on dapper_linux-source-2.6.15 2.6.15-57.94, but not in
changelog
Priority

Low

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
(binary supplied by "linux" now)
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
(reached 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
(abandonded branch)
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)