Home/CVE/Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an a
CVE

CVE-2020-16119

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an a

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.

MEDIUM · CVSS 6.3 EPSS 0.00087
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

3
linux kernelall versions
canonical ubuntu linuxall versions
debian linuxall versions
▣

Scoring & Timeline

6.3
MEDIUM · CVSS v3.1 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Jan 2021 · 01:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
⚑

Vendor Advisories

12
suse-csafSUSE-SU-2023:0416-1
suse-csafSUSE-SU-2022:4617-1
suse-csafSUSE-SU-2022:3809-1
suse-csafSUSE-SU-2022:3775-1
suse-csafSUSE-SU-2022:3704-1
🔗

References & Sources

12
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695PatchThird Party Advisory
https://launchpad.net/bugs/1883840Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlThird Party Advisory
https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/
https://security.netapp.com/advisory/ntap-20210304-0006/Third Party Advisory
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