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Amazon Linux Local Check: ALAS-2012-83

Information

Severity

Severity

High

Family

Family

Amazon Linux Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.2

CVSSv2 Vector

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

7 years ago

Modified

Modified

3 years ago

Summary

Amazon Linux Local Security Checks

Insight

Insight

It was found that the data_len parameter of the sock_alloc_send_pskb() function in the Linux kernel's networking implementation was not validated before use. A local user with access to a TUN/TAP virtual interface could use this flaw to crash the system or, potentially, escalate their privileges. Note that unprivileged users cannot access TUN/TAP devices until the root user grants them access. (CVE-2012-2136, Important)

Solution

Solution

Run yum update kernel to update your system. You will need to reboot your system in order for the new kernel to be running.

Common Vulnerabilities and Exposures (CVE)