Is CVE-2016-4805 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 0%.

What products does CVE-2016-4805 affect?

Tracked products affected include Ubuntu. Check the version you run to see whether it is affected.

How do I fix CVE-2016-4805?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

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CVE-2016-4805

Q: What is CVE-2016-4805?

CVE-2016-4805 is a high-severity software vulnerability (Use-after-free) with a CVSS score of 7.8. Use-after-free vulnerability in drivers/net/ppp/ppp_generic.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service (memory corruption and system crash, or spinlock) or possibly have unspecified other impact by re

HIGH severity · CVSS 7.8 · Use-after-free

7.8CVSS HIGH

Summary

Use-after-free vulnerability in drivers/net/ppp/ppp_generic.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service (memory corruption and system crash, or spinlock) or possibly have unspecified other impact by removing a network namespace, related to the ppp_register_net_channel and ppp_unregister_channel functions.

Impact & exploitability

Attack vectorLocal

Attack complexityLow

Privileges requiredLow

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)0%

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Ubuntu

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f461dcdd296eecedaffffc6bae2bfa90bd7eb89 ↗

Additional information

NVD record
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f461dcdd296eecedaffffc6bae2bfa90bd7eb89Patch
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.htmlAdvisory