DCCP CCID structure use-after-free
CVE-2020-16119

6.3MEDIUM

Key Information:

Vendor
Canonical
Status
Linux Kernel
Vendor
CVE Published:
14 January 2021

Summary

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.

Affected Version(s)

Linux kernel 5.4 kernel < 5.4.0-51.56

Linux kernel 5.3 kernel < 5.3.0-68.63

Linux kernel 4.15 kernel < 4.15.0-121.123

References

https://launchpad.net/bugs/1883840
vendor-advisoryx_refsource_UBUNTU
https://ubuntu.com/USN-4576-1
vendor-advisoryx_refsource_UBUNTU
https://ubuntu.com/USN-4577-1
vendor-advisoryx_refsource_UBUNTU

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Hador Manor
.