CVE-2026-16517
Low
Description
A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archive_write_zip_header function in archive_write_set_format_zip.c, when ZIP encryption is enabled and the entry file size is close to INT64_MAX, the addition of the encryption overhead to the entry size overflows int64_t, resulting in undefined behavior. This could lead to incorrect Zip64 extension decisions or potential memory corruption.
SeverityLow
CVSS2.9
Exploit probability—
Product
Red Hat Enterprise Linux 10
PublishedJul 21, 2026
First seenJul 21, 2026
Weakness typeCWE-190Integer overflow
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Red Hat Enterprise Linux 10 | No range specified | — |
| Red Hat Red Hat Hardened Images | No range specified | — |
| Red Hat Red Hat Enterprise Linux 6 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 7 | No range specified | — |
| Red Hat Red Hat OpenShift Container Platform 4 | No range specified | — |
| Red Hat Red Hat OpenShift Container Platform 5 | No range specified | — |
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