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Vulnerabilities

Vulnerability · CVE-2022-47021

A null pointer dereference issue was discovered in functions op_get_data and op_open1 in opusfile.c in xiph opusfile 0.9 thru 0.12 allows attackers to cause denial of service or ot

Published Jan 20, 2023 · catalog updated Oct 15, 2026 · A null pointer dereference

Check if you run it

No confirmed exploitation is on record for CVE-2022-47021. EPSS is 0.39%. Act only if a listed version of A null pointer dereference is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A null pointer dereference).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.39%
Remediation
Advisory link
Affected products
Alpine:v3.15 opusfile · Alpine:v3.16 opusfile · Alpine:v3.17 opusfile · Alpine:v3.18 opusfile · Alpine:v3.19 opusfile · Alpine:v3.20 opusfile

A null pointer dereference issue was discovered in functions op_get_data and op_open1 in opusfile.c in xiph opusfile 0.9 thru 0.12 allows attackers to cause denial of service or other unspecified impacts.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Alpine:v3.15 opusfile0.9 → 0.12-r3
  • Alpine:v3.16 opusfile0.9 → 0.12-r3
  • Alpine:v3.17 opusfile0.9 → 0.12-r4
  • Alpine:v3.18 opusfile0.9 → 0.12-r4
  • Alpine:v3.19 opusfile0.9 → 0.12-r4
  • Alpine:v3.20 opusfile0.9 → 0.12-r4
  • Alpine:v3.21 opusfile0.9 → 0.12-r4
  • Alpine:v3.22 opusfile0.9 → 0.12-r4
  • Alpine:v3.23 opusfile0.9 → 0.12-r4
  • Alpine:v3.24 opusfile0.9 → 0.12-r4

How to fix CVE-2022-47021

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-47021. EPSS is 0.39%. Act only if a listed version of A null pointer dereference is installed.

Which versions are affected?

Compare what you have installed with 0.9 → 0.12-r3, 0.9 → 0.12-r4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 20, 2023 · OpenSSF OSV / OSV Scanner

    Detected

    A null pointer dereference issue was discovered in functions op_get_data and op_open1 in opusfile.c in xiph opusfile 0.9 thru 0.12 allows attackers to cause denial of service or other unspecified impacts.

  2. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    opusfile fixed in 0.12-r3; opusfile fixed in 0.12-r3; opusfile fixed in 0.12-r4; opusfile fixed in 0.12-r4

  3. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    opusfile fixed in 0.12-r3

  4. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    opusfile fixed in 0.12-r4

  5. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    A null pointer dereference issue was discovered in functions op_get_data and op_open1 in opusfile.c in xiph opusfile 0.9 thru 0.12 allows attackers to cause denial of service or other unspecified impacts.

Sources

  • CVE.orgVulnerability recordCVE-2022-47021

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-47021

    30-day exploitation probability 0.4%

    first.org
  • OpenSSF OSV / OSV ScannerPackage advisoryALPINE-CVE-2022-47021
    osv.dev
  • Trivy Vulnerability DBPackage advisoryALPINE-CVE-2022-47021

    A null pointer dereference issue was discovered in functions op_get_data and op_open1 in opusfile.c in xiph opusfile 0.9 thru 0.12 allows attackers to cause denial of service or other unspecified impacts.

    osv.dev

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.