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Debian Security Advisory DSA 4073-1 (linux - security update)

Information

Severity

Severity

High

Family

Family

Debian 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

4 years ago

Modified

Modified

3 years ago

Summary

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2017-8824Mohamed Ghannam discovered that the DCCP implementation did not correctly manage resources when a socket is disconnected and reconnected, potentially leading to a use-after-free. A local user could use this for denial of service (crash or data corruption) or possibly for privilege escalation. On systems that do not already have the dccp module loaded, this can be mitigated by disabling it: echo>> /etc/modprobe.d/disable-dccp.conf install dccp falseCVE-2017-16538 Andrey Konovalov reported that the dvb-usb-lmedm04 media driver did not correctly handle some error conditions during initialisation. A physically present user with a specially designed USB device can use this to cause a denial of service (crash). Description truncated. Please see the references for more information.

Affected Software

Affected Software

linux on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

Solution

For the stable distribution (stretch), these problems have been fixed in version 4.9.65-3+deb9u1. We recommend that you upgrade your linux packages. For the detailed security status of linux please refer to its security tracker page linked in the references.