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CVE-2022-36227

critical

In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, w…

Vendor / product: Libarchive — libarchive

In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. NOTE: the discoverer cites this CWE-476 remark but third parties dispute the code-execution impact: "In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution."

CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2022-11-22 02:15
Modified: 2026-10-08 21:17
NVD status: Modified
Last synced 3 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

libarchive / libarchive ≥3.0.0 <3.6.2
debian / debian_linux 10.0
fedoraproject / fedora 37
splunk / universal_forwarder ≥8.2.0 <8.2.12, ≥9.0.0 <9.0.6, 9.1.0

Weakness classification (CWE)

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://bugs.gentoo.org/882521
Patch / mitigation: https://github.com/libarchive/libarchive/issues/1754
Patch / mitigation: https://bugs.gentoo.org/882521
Patch / mitigation: https://github.com/libarchive/libarchive/issues/1754

References

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗

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