CVE-2011-0521

Severity: high (CVSS 7.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-02-02 · updated 2026-06-16
Weakness: CWE-119

Description

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.

Affected products

Linux kernel: before 2.6.38; 2.6.38, 2.6.38-rc1 — fixed in 2.6.38

How to fix

Upgrade to a fixed version: Linux kernel 2.6.38. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=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
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cb26a24ee9706473f31d34cc259f4dcf45cd0644

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