CVE-2022-2476: A null pointer dereference bug was found in wavpack-5.4.0 The results from the ASAN log: AddressSanitizer:DEAD

Routine

MEDIUM 5.5DOWNGRADEMITIGATE

CVE-2022-2476 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.

A null pointer dereference bug was found in wavpack-5.4.0 The results from the ASAN log: AddressSanitizer:DEADLYSIGNAL ===================================================================84257==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x561b47a970c6 bp 0x7fff13952fb0 sp 0x7fff1394fca0 T0) ==84257==The signal is caused by a WRITE memory access. ==84257==Hint: address points to the zero page. #0 0x561b47a970c5 in main cli/

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	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-476
Published	2022-07-19
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · 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

2022-07-19 20:15 UTCPublished CVE record published
2026-06-17 04:41 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: 35 · 36

Fixed in: no fixed release known

Safe to downgrade to: a release before 35

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-2022-2476?

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-2022-2476 being exploited?

CVE-2022-2476 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-2022-2476 affect?

CVE-2022-2476 affects wavpack, fedora. Severity is medium (CVSS 5.5). A null pointer dereference bug was found in wavpack-5.4.0 The results from the ASAN log: AddressSanitizer:DEADLYSIGNAL ===================================================================84257==ERROR: AddressSanitizer: SEGV on unknown addres

How urgent is CVE-2022-2476?

Priority 32/100. Public exploit reference

Related CVEs

CVE-2021-44269 MEDIUM 5.5 DOWNGRADE MITIGATE An out of bounds read was found in Wavpack 5.4.0 in processing *.WAV files
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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