Input validation error in Linux kernel - CVE-2011-0521
Published: February 3, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45387
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-2011-0521
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.
The dvb_ca_ioctl function in drivers/media/dvb/ttpci/av7110_ca.c in the Linux kernel before 2.6.38-rc2 does not check the sign of a certain integer field, which allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact via a negative value.
How to mitigate CVE-2011-0521
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cb26a24ee9706473f31d34cc259f4dcf45cd0644
- http://openwall.com/lists/oss-security/2011/01/24/2
- http://openwall.com/lists/oss-security/2011/01/25/2
- http://secunia.com/advisories/43009
- http://secunia.com/advisories/46397
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.38-rc2
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://www.securityfocus.com/bid/45986
- http://www.securitytracker.com/id?1025195
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64988