Linux Kernel Keyring 'refcount' Local Integer Underflow Vulnerability

BID:36793

Info

Linux Kernel Keyring 'refcount' Local Integer Underflow Vulnerability

Bugtraq ID: 36793
Class: Boundary Condition Error
CVE: CVE-2009-3624
Remote: No
Local: Yes
Published: Oct 22 2009 12:00AM
Updated: Apr 13 2015 09:52PM
Credit: David Howells
Vulnerable: Ubuntu Ubuntu Linux 9.10 sparc
Ubuntu Ubuntu Linux 9.10 powerpc
Ubuntu Ubuntu Linux 9.10 lpia
Ubuntu Ubuntu Linux 9.10 i386
Ubuntu Ubuntu Linux 9.10 amd64
Ubuntu Ubuntu Linux 9.04 sparc
Ubuntu Ubuntu Linux 9.04 powerpc
Ubuntu Ubuntu Linux 9.04 lpia
Ubuntu Ubuntu Linux 9.04 i386
Ubuntu Ubuntu Linux 9.04 amd64
Ubuntu Ubuntu Linux 8.10 sparc
Ubuntu Ubuntu Linux 8.10 powerpc
Ubuntu Ubuntu Linux 8.10 lpia
Ubuntu Ubuntu Linux 8.10 i386
Ubuntu Ubuntu Linux 8.10 amd64
Ubuntu Ubuntu Linux 8.04 LTS sparc
Ubuntu Ubuntu Linux 8.04 LTS powerpc
Ubuntu Ubuntu Linux 8.04 LTS lpia
Ubuntu Ubuntu Linux 8.04 LTS i386
Ubuntu Ubuntu Linux 8.04 LTS amd64
Ubuntu Ubuntu Linux 6.06 LTS sparc
Ubuntu Ubuntu Linux 6.06 LTS powerpc
Ubuntu Ubuntu Linux 6.06 LTS i386
Ubuntu Ubuntu Linux 6.06 LTS amd64
S.u.S.E. openSUSE 11.2
Linux kernel 2.6.31 .2
Linux kernel 2.6.31 -rc7
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31 -rc6
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31 -rc3
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31 -rc1
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31
Linux kernel 2.6.30 .1
Linux kernel 2.6.30 -rc6
Linux kernel 2.6.30 -rc5
Linux kernel 2.6.30 -rc3
Linux kernel 2.6.30 -rc2
Linux kernel 2.6.30 -rc1
Linux kernel 2.6.30
Linux kernel 2.6.29 .4
Linux kernel 2.6.29 .1
Linux kernel 2.6.3
Linux kernel 2.6.31.4
Linux kernel 2.6.31-rc9
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31-rc8
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31-rc5-git3
Linux kernel 2.6.30.5
Linux kernel 2.6.30.4
Linux kernel 2.6.30.3
Linux kernel 2.6.29-rc2-git1
Linux kernel 2.6.29-rc2
Linux kernel 2.6.29-rc1
Not Vulnerable:

Discussion

Linux Kernel Keyring 'refcount' Local Integer Underflow Vulnerability

The Linux kernel is prone to a local integer-underflow vulnerability.

Attackers can exploit this issue to crash the affected computer, denying service to legitimate users.
Given the nature of this issue, attackers may also be able to run arbitrary code, but this has not been confirmed.

Exploit / POC

Linux Kernel Keyring 'refcount' Local Integer Underflow Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

Linux Kernel Keyring 'refcount' Local Integer Underflow Vulnerability

Solution:
Updates are available. Please see the references for more information.


S.u.S.E. openSUSE 11.2

References

Linux Kernel Keyring 'refcount' Local Integer Underflow Vulnerability

References:

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