A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.
| Vendor | Product | Versions |
|---|---|---|
| red hat | red hat enterprise linux | — |
Updated severity to CRITICAL, clarified that the vulnerability is cataloged as CVE-2026-5121, and corrected the status of exploit availability.
Initial creation
