Resource management error in Linux kernel - CVE-2011-1747
Published: May 9, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45058
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-1747
CWE-ID: CWE-399
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 perform a denial of service (DoS) attack.
The agp subsystem in the Linux kernel 2.6.38.5 and earlier does not properly restrict memory allocation by the (1) AGPIOC_RESERVE and (2) AGPIOC_ALLOCATE ioctls, which allows local users to cause a denial of service (memory consumption) by making many calls to these ioctls.
How to mitigate CVE-2011-1747
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/2011/04/22/10
- http://openwall.com/lists/oss-security/2011/04/22/11
- http://openwall.com/lists/oss-security/2011/04/22/7
- http://openwall.com/lists/oss-security/2011/04/22/8
- http://openwall.com/lists/oss-security/2011/04/22/9
- http://securitytracker.com/id?1025441
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38.5
- http://www.securityfocus.com/bid/47832
- https://bugzilla.redhat.com/show_bug.cgi?id=698999
- https://lkml.org/lkml/2011/4/14/294