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CVE-2026-4111 is an infinite-loop vulnerability in libarchive's RAR5 archive decompression logic, reached through the archive_read_data() processing path. Processing a specially crafted RAR5 archive can place the decompression routine in a state that prevents forward progress while continuously consuming CPU resources. The malicious archive passes checksum validation and appears structurally valid, making those checks insufficient to prevent exploitation. Applications and services that process attacker-controlled archives can consequently suffer persistent denial of service.
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A network-exploitable denial-of-service vulnerability in libarchive's RAR5 decompression handling. Processing crafted RAR5 archive data through archive_read_data() can cause an infinite loop, exhausting availability. The referenced Rocky Linux 9 advisory provides affected-package updates.
A libarchive denial-of-service vulnerability in RAR5 archive decompression: processing data through archive_read_data() can trigger an infinite loop, resulting in availability impact.
An important-severity network-accessible vulnerability affecting availability; the supplied record identifies CVE-2026-4111 but does not describe the underlying flaw or affected component.
A remotely exploitable, low-complexity vulnerability requiring no privileges or user interaction that can cause high availability impact; no confidentiality or integrity impact is stated in the supplied metadata.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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