CVE-2021-3905
published 2022-08-23CVE-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…
PriorityP336high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.58%
72.7th percentile
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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| debian | openvswitch | — | — |
| fedoraproject | fedora | — | — |
| msrc | cm1_openvswitch_2.15.1-2_on_cbl_mariner_1.0 | — | — |
| openvswitch | openvswitch | < 2.17.0 | 2.17.0 |
| openvswitch | openvswitch | >= 0 < 2.9.8-0ubuntu0.18.04.2 | 2.9.8-0ubuntu0.18.04.2 |
| openvswitch | openvswitch | >= 0 < 2.13.3-0ubuntu0.20.04.2 | 2.13.3-0ubuntu0.20.04.2 |
| openvswitch | openvswitch | >= 0 < 2.17.0~git20220105.0d1ffb7-0ubuntu1 | 2.17.0~git20220105.0d1ffb7-0ubuntu1 |
| redhat | enterprise_linux_fast_datapath | — | — |
| redhat | enterprise_linux_fast_datapath | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5LOW
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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Microsoft
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.
vendor_msrc·2022-08-09·CVSS 7.5
CVE-2021-3905 [HIGH] CWE-401 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.
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the
Ubuntu
Open vSwitch vulnerability
vendor_ubuntu·2022-01-20
CVE-2021-3905 Open vSwitch vulnerability
Title: Open vSwitch vulnerability
Summary: Open vSwitch could be made to hang or crash if it received specially
crafted network traffic.
It was discovered that Open vSwitch incorrectly handled certain fragmented
packets. A remote attacker could possibly use this issue to cause Open
vSwitch to consume resources, leading to a denial of service.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
openvswitch: External triggered memory leak in Open vSwitch while processing fragmented packets
vendor_redhat·2021-09-29·CVSS 7.5
CVE-2021-3905 [HIGH] CWE-401 openvswitch: External triggered memory leak in Open vSwitch while processing fragmented packets
openvswitch: External triggered memory leak in Open vSwitch while processing fragmented packets
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.
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.
Statement: Red Hat Enterprise Linux 7 provides the `openvswitch` package only through the unsupported Optional repository. Customers are advised to install Open vSwitch (OVS) from RHEL Fast Datapath instead.
Red Hat OpenStack Platform deployments are not affected because they use OVS/OVN directly f
Debian
CVE-2021-3905: openvswitch - A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation ...
vendor_debian·2021·CVSS 7.5
CVE-2021-3905 [HIGH] CVE-2021-3905: openvswitch - A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation ...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
GHSA
GHSA-w2f8-jf7v-2cj4: A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing
ghsa_unreviewed·2022-08-24
CVE-2021-3905 [HIGH] CWE-401 GHSA-w2f8-jf7v-2cj4: A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing
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.
OSV
CVE-2021-3905: A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing
osv·2021-11-08·CVSS 7.5
CVE-2021-3905 [HIGH] CVE-2021-3905: A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing
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.
No detection rules found.
No public exploits indexed.
https://access.redhat.com/security/cve/CVE-2021-3905https://bugzilla.redhat.com/show_bug.cgi?id=2019692https://github.com/openvswitch/ovs-issues/issues/226https://github.com/openvswitch/ovs/commit/803ed12e31b0377c37d7aa8c94b3b92f2081e349https://security.gentoo.org/glsa/202311-16https://ubuntu.com/security/CVE-2021-3905https://access.redhat.com/security/cve/CVE-2021-3905https://bugzilla.redhat.com/show_bug.cgi?id=2019692https://github.com/openvswitch/ovs-issues/issues/226https://github.com/openvswitch/ovs/commit/803ed12e31b0377c37d7aa8c94b3b92f2081e349https://security.gentoo.org/glsa/202311-16https://ubuntu.com/security/CVE-2021-3905
2022-08-23
Published