CVE-2021-44269: An out of bounds read was found in Wavpack 5.4.0 in processing *.WAV files

This month

MEDIUM 5.5DOWNGRADEMITIGATE

CVE-2021-44269 is a medium-severity flaw (CVSS 5.5) affecting wavpack, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An out of bounds read was found in Wavpack 5.4.0 in processing *.WAV files. This issue triggered in function WavpackPackSamples of file src/pack_utils.c, tainted variable cnt is too large, that makes pointer sptr read beyond heap bound.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 33%)
CISA exploited list	No
Weakness	CWE-125
Published	2022-03-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fedoraproject · wavpack

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

Am I affected?

Timeline

2022-03-10 17:44 UTCPublished CVE record published
2026-06-17 04:12 UTCUpdated Record last modified

wavpack wavpack DOWNGRADE

Affected: 5.4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.4.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.4.0 (Debian / Ubuntu)

apt-cache madison wavpack sudo apt install wavpack=<VERSION_BEFORE_5.4.0> sudo apt-mark hold wavpack

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

dnf --showduplicates list wavpack sudo dnf downgrade wavpack-<VERSION_BEFORE_5.4.0> sudo dnf versionlock add wavpack

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.

fedoraproject fedora MITIGATE

Affected: 34 · 35 · 36

Fixed in: no fixed release known

Safe to downgrade to: a release before 34

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2021-44269?

wavpack: downgrade or apply the listed mitigation; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-44269 being exploited?

CVE-2021-44269 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-2021-44269 affect?

CVE-2021-44269 affects wavpack, fedora. Severity is medium (CVSS 5.5). An out of bounds read was found in Wavpack 5.4.0 in processing *.WAV files. This issue triggered in function WavpackPackSamples of file src/pack_utils.c, tainted variable cnt is too large, that makes pointer sptr read beyond heap bound.

How urgent is CVE-2021-44269?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2022-2476 MEDIUM 5.5 DOWNGRADE MITIGATE A null pointer dereference bug was found in wavpack-5.4.0 The results from the ASAN log: AddressSanitizer:DEAD
CVE-2020-35738 MEDIUM 6.1 DOWNGRADE MITIGATE WavPack 5.3.0 has an out-of-bounds write in WavpackPackSamples in pack_utils.c because of an integer overflow

References

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