Use After Free in Openvswitch

CVE-2021-36980

Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action.

Vulnerability class: Use-After-Free

EPSS: 0.012 (64.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-36980?
CVE-2021-36980 is a medium-severity vulnerability in Openvswitch, classified under Use After Free. CVSS score: 5.5/10. Published 2021-07-20.
How severe is CVE-2021-36980?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2021-36980 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.