CVE-2021-36980
MEDIUM
5.5
CVSS Score
Published: July 20, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:59 AM UTC
1 product affected across 1 vendorOpenvswitch
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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%
SSVC
No known exploit
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
2.11.0 ≤ v ≤ 2.15.0
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851
- 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
References (9)
PatchThird Party Advisory
Source: [email protected]
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851Third Party Advisory
Source: [email protected]
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openvswitch/OSV-2020-2197.yamlPatchThird Party Advisory
Source: [email protected]
https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58fPatchThird Party Advisory
Source: [email protected]
https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3PatchThird Party Advisory
Source: [email protected]
https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35PatchThird Party Advisory
Source: [email protected]
https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2PatchThird Party Advisory
Source: [email protected]
https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575PatchThird Party Advisory
Source: [email protected]
https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.5MEDIUMCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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