Multiple integer overflows in the (1) agp_allocate_memory and (2) agp_create_user_memory functions in drivers/char/agp/generic.c in the Linux kernel before 2.6.38.5 allow local users to trigger buffer overflows, and consequently cause a denial of service (system crash) or possibly have unspecified other impact, via vectors related to calls that specify a large number of memory pages.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 2.6.38.5 (excluding) |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-238.19.1.el5 | * |
| Red Hat Enterprise Linux 6 | RedHat | kernel-0:2.6.32-131.17.1.el6 | * |
| Red Hat Enterprise MRG 2 | RedHat | kernel-rt-0:2.6.33.9-rt31.75.el6rt | * |
| Linux | Ubuntu | hardy | * |
| Linux | Ubuntu | lucid | * |
| Linux | Ubuntu | maverick | * |
| Linux | Ubuntu | natty | * |
| Linux | Ubuntu | upstream | * |
| Linux-ec2 | Ubuntu | lucid | * |
| Linux-ec2 | Ubuntu | maverick | * |
| Linux-ec2 | Ubuntu | upstream | * |
| Linux-fsl-imx51 | Ubuntu | lucid | * |
| Linux-fsl-imx51 | Ubuntu | upstream | * |
| Linux-lts-backport-maverick | Ubuntu | lucid | * |
| Linux-lts-backport-maverick | Ubuntu | upstream | * |
| Linux-lts-backport-natty | Ubuntu | upstream | * |
| Linux-mvl-dove | Ubuntu | lucid | * |
| Linux-mvl-dove | Ubuntu | maverick | * |
| Linux-mvl-dove | Ubuntu | upstream | * |
| Linux-source-2.6.15 | Ubuntu | dapper | * |
| Linux-source-2.6.15 | Ubuntu | upstream | * |
| Linux-ti-omap4 | Ubuntu | maverick | * |
| Linux-ti-omap4 | Ubuntu | natty | * |
| Linux-ti-omap4 | Ubuntu | upstream | * |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b522f02184b413955f3bc952e3776ce41edc6355
- http://openwall.com/lists/oss-security/2011/04/21/4
- http://openwall.com/lists/oss-security/2011/04/22/7
- http://rhn.redhat.com/errata/RHSA-2011-0927.html
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38.5
- http://www.securityfocus.com/bid/47535
- https://bugzilla.redhat.com/show_bug.cgi?id=698998
- https://lkml.org/lkml/2011/4/14/294
- https://lkml.org/lkml/2011/4/19/400
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b522f02184b413955f3bc952e3776ce41edc6355
- http://openwall.com/lists/oss-security/2011/04/21/4
- http://openwall.com/lists/oss-security/2011/04/22/7
- http://rhn.redhat.com/errata/RHSA-2011-0927.html
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38.5
- http://www.securityfocus.com/bid/47535
- https://bugzilla.redhat.com/show_bug.cgi?id=698998
- https://lkml.org/lkml/2011/4/14/294
- https://lkml.org/lkml/2011/4/19/400