AIKIDO-2026-10342
libarchive.libarchive is vulnerable to NULL Pointer Dereference
55
Medium Risk
This Affects:
libarchive.libarchiveTL;DR
Affected versions of this package contain a flaw in archive_entry_acl_from_text_w where malformed ACL input may trigger a segmentation fault instead of returning ARCHIVE_WARN as specified by the API contract. The function fails to properly validate certain malformed ACL strings, leading to a null pointer dereference during parsing. An attacker able to supply crafted ACL metadata—such as through a malicious archive file processed by software relying on libarchive—could trigger a crash, resulting in a denial-of-service condition when the archive is parsed.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
libarchive.libarchive is vulnerable to NULL Pointer Dereference in versions 3.3.0 - 3.8.5.
How to fix this
Upgrade the libarchive.libarchive library to the patch version.
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SOC 2Compliant
ISO 27001Compliant