CVE-2021-43429: A Denial of Service vulnerability exists in CORTX-S3 Server as of 11/7/2021 via the mempool_destroy method due

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HIGH 7.5REMOTEDOWNGRADE

CVE-2021-43429 is a high-severity flaw (CVSS 7.5) affecting cortx-s3 server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Denial of Service vulnerability exists in CORTX-S3 Server as of 11/7/2021 via the mempool_destroy method due to a failture to release locks pool->lock.

Why this priority

High severity
Public exploit reference
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	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-667
Published	2022-04-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: seagate

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

Am I affected?

Timeline

2022-04-07 17:15 UTCPublished CVE record published
2026-06-17 04:10 UTCUpdated Record last modified

seagate cortx-s3 server DOWNGRADE

Affected: 2021-11-07

Fixed in: no fixed release known

Safe to downgrade to: a release before 2021-11-07

1. Check installed version

apt-cache policy cortx-s3-server || rpm -q cortx-s3-server || cortx-s3-server --version

2. No fixed release: DOWNGRADE to a release before 2021-11-07 (Debian / Ubuntu)

apt-cache madison cortx-s3-server sudo apt install cortx-s3-server=<VERSION_BEFORE_2021-11-07> sudo apt-mark hold cortx-s3-server

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

dnf --showduplicates list cortx-s3-server sudo dnf downgrade cortx-s3-server-<VERSION_BEFORE_2021-11-07> sudo dnf versionlock add cortx-s3-server

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-2021-43429?

cortx-s3 server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43429 being exploited?

CVE-2021-43429 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-2021-43429 affect?

CVE-2021-43429 affects cortx-s3 server. Severity is high (CVSS 7.5). A Denial of Service vulnerability exists in CORTX-S3 Server as of 11/7/2021 via the mempool_destroy method due to a failture to release locks pool->lock.

How urgent is CVE-2021-43429?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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