What’s Vulnerable › Vulnerabilities

CVE-2021-36980

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-07-20 · updated 2026-06-17
• Weakness: CWE-416

Description

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.

Affected products

• Openvswitch: from 2.11.0 through 2.15.0

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openvswitch/OSV-2020-2197.yaml
• https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f
• https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3
• https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35
• https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2
• https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575
• https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2
• https://security.gentoo.org/glsa/202311-16
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openvswitch/OSV-2020-2197.yaml
• https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f

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