CVE-2024-22563: openvswitch 2.17.8 was discovered to contain a memory leak via the function xmalloc__ in openvswitch-2.17.8/li

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HIGH 7.5REMOTEDOWNGRADE

CVE-2024-22563 is a high-severity flaw (CVSS 7.5) affecting openvswitch. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

openvswitch 2.17.8 was discovered to contain a memory leak via the function xmalloc__ in openvswitch-2.17.8/lib/util.c.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-401
Published	2024-01-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openvswitch

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-01-19 15:15 UTCPublished CVE record published
2026-06-17 07:11 UTCUpdated Record last modified

openvswitch openvswitch DOWNGRADE

Affected: 2.17.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.17.8

1. Check installed version

apt-cache policy openvswitch || rpm -q openvswitch || openvswitch --version

2. No fixed release: DOWNGRADE to a release before 2.17.8 (Debian / Ubuntu)

apt-cache madison openvswitch sudo apt install openvswitch=<VERSION_BEFORE_2.17.8> sudo apt-mark hold openvswitch

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openvswitch sudo dnf downgrade openvswitch-<VERSION_BEFORE_2.17.8> sudo dnf versionlock add openvswitch

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-22563?

openvswitch: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-22563 being exploited?

CVE-2024-22563 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-22563 affect?

CVE-2024-22563 affects openvswitch. Severity is high (CVSS 7.5). openvswitch 2.17.8 was discovered to contain a memory leak via the function xmalloc__ in openvswitch-2.17.8/lib/util.c.

How urgent is CVE-2024-22563?

Priority 43/100. High severity; Remotely exploitable, no login, no user action

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References

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