Input validation error in Linux kernel - CVE-2011-1746
Published: May 9, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45057
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2011-1746
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
How to mitigate CVE-2011-1746
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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