Vulnerability in Openvswitch
CVE-2021-3905
A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.
EPSS: 0.015 (71.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Openvswitch
- Canonical Ubuntu_linux — versions 21.10
- Fedoraproject Fedora — versions 35
- Redhat Enterprise_linux_fast_datapath — versions 7.0, 8.0
- N/a Openvswitch (Ovs) — versions Fixed in v2.17.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (Patch, Third Party Advisory)
- secalert@redhat.com (Exploit, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
Frequently asked questions
- What is CVE-2021-3905?
- CVE-2021-3905 is a high-severity vulnerability in Openvswitch, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2022-08-23.
- How severe is CVE-2021-3905?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-3905 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.