CVE-2020-16119

DCCP CCID structure use-after-free

Description

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.

Category

6.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory launchpad.net Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory launchpad.net Vendor Advisory debian.org
Affected: Canonical Linux kernel
Published at:
Updated at:

References

Link Tags
https://launchpad.net/bugs/1883840 issue tracking third party advisory patch vendor advisory
https://ubuntu.com/USN-4576-1 third party advisory vendor advisory
https://ubuntu.com/USN-4577-1 third party advisory vendor advisory
https://ubuntu.com/USN-4578-1 third party advisory vendor advisory
https://ubuntu.com/USN-4579-1 third party advisory vendor advisory
https://ubuntu.com/USN-4580-1 third party advisory vendor advisory
https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695 third party advisory patch vendor advisory
https://security.netapp.com/advisory/ntap-20210304-0006/ third party advisory
https://www.debian.org/security/2021/dsa-4978 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-16119?
CVE-2020-16119 has been scored as a medium severity vulnerability.
How to fix CVE-2020-16119?
To fix CVE-2020-16119, 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-2020-16119 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-16119 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-16119?
CVE-2020-16119 affects Canonical Linux kernel.
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