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libarchive

A double free vulnerability exists in libarchive's RAR5 reader that can cause applications using the library to crash, resulting in denial of service. This occurs when the filtered_buf pointer is freed twice during the processing of specially crafted RAR5 archives. The issue affects multiple specific versions of libarchive as used in various Ubuntu and Red Hat Hardened Images packages. A security update is available from Red Hat that addresses this vulnerability.

CVE-2026-14164 describes a double free vulnerability in libarchive's RAR5 reader. During parsing of a maliciously crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, causing a double-free condition. This can lead to application crashes and denial of service. The vulnerability affects multiple specific versions of libarchive, including those packaged in Ubuntu and Red Hat Hardened Images. Red Hat has released updated packages (libarchive 3.8.8-2.hum1) that fix this issue.

Detailed information about A double free issue has been identified in libarchive's RAR5 reader. affecting null libarchive. Get real-time updates, technical deta

A double free issue has been identified in libarchive's RAR5 reader. - Live Threat Intelligence - Threat Radar | OffSeq.com

A double free issue has been identified in libarchive's RAR5 reader. (CVE-2026-14164)

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