CVE-2011-5321

Published: 2 May 2016

The tty_open function in drivers/tty/tty_io.c in the Linux kernel before 3.1.1 mishandles a driver-lookup failure, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via crafted access to a device file under the /dev/pts directory.

Notes

Author	Note
jdstrand	android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support

Author

Note

jdstrand

android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	lucid	Ignored (end of life)
	precise	Not vulnerable (3.2.0-1.1)
	trusty	Not vulnerable (3.11.0-12.19)
	upstream	Released (3.2~rc1)
	utopic	Not vulnerable (3.13.0-24.46)
	vivid	Not vulnerable (3.16.0-23.31)
	wily	Not vulnerable (3.19.0-15.15)
	Patches: Introduced by 4a2b5fddd53b80efcb3266ee36e23b8de28e761a Fixed by c290f8358acaeffd8e0c551ddcc24d1206143376
linux-2.6 Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-armadaxp Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.2.0-1600.1)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-ec2 Launchpad, Ubuntu, Debian	lucid	Ignored (end of life)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-flo Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	upstream	Released (3.2~rc1)
	utopic	Not vulnerable (3.4.0-3.10)
	vivid	Not vulnerable (3.4.0-3.15)
	wily	Not vulnerable (3.4.0-3.15)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	lucid	Ignored (end of life)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	upstream	Released (3.2~rc1)
	utopic	Not vulnerable (3.4.0-3.14)
	vivid	Not vulnerable (3.4.0-4.23)
	wily	Not vulnerable (3.4.0-4.23)
linux-grouper Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	upstream	Released (3.2~rc1)
	utopic	Ignored (end of life)
	vivid	Does not exist
	wily	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.5.0-18.29~precise1)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Ignored (end of life, was needs-triage)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.11.0-13.20~precise2)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.13.0-24.46~precise1)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was not-affected [3.16.0-25.33~14.04.2])
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was not-affected [3.19.0-18.18~14.04.1])
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-mako Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	upstream	Released (3.2~rc1)
	utopic	Not vulnerable (3.4.0-5.28)
	vivid	Not vulnerable (3.4.0-5.34)
	wily	Not vulnerable (3.4.0-5.34)
linux-manta Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	upstream	Released (3.2~rc1)
	utopic	Not vulnerable (3.4.0-6.25)
	vivid	Not vulnerable (3.4.0-6.29)
	wily	Not vulnerable (3.4.0-6.29)
linux-mvl-dove Launchpad, Ubuntu, Debian	lucid	Ignored (end of life)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	lucid	Ignored (end of life)
	precise	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	vivid	Does not exist
	wily	Not vulnerable (4.2.0-1008.12)
linux-ti-omap4 Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.0.0-1402.3)
	trusty	Does not exist
	upstream	Released (3.2~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist

Severity score breakdown

Parameter	Value
Base score	5.5
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Bugs

https://launchpad.net/bugs/1432799

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