CVE-2011-4112

Public Exploit

Description

The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.06%

Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=751006	patch exploit third party advisory issue tracking
https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162	third party advisory patch
http://downloads.avaya.com/css/P8/documents/100156038	third party advisory
http://www.openwall.com/lists/oss-security/2011/11/21/4	patch mailing list third party advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1	patch vendor advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2011-4112?: CVE-2011-4112 has been scored as a medium severity vulnerability.
How to fix CVE-2011-4112?: To fix CVE-2011-4112, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-4112 being actively exploited in the wild?: It is possible that CVE-2011-4112 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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