Red HatCVE-2026-16517
Red Hat libarchive: integer overflow
Low2.9CVE-2026-16517 · Published Jul 21, 2026 · updated Sep 22, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 6 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 7 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 8 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 9 Product | all versions | No fix yet |
| Red Hat OpenShift Container Platform 4 Product | all versions | No fix yet |
| all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-190
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 21 | Red Hat Enterprise Linux 10: information disclosure | Low3.4 | No fix yet |
| Jul 21 | Red Hat Enterprise Linux 10: out-of-bounds read | Medium4.2 | No fix yet |
| Jul 21 | Red Hat ansible-core: argument injection | High7.8 | No fix yet |
| Jul 21 | Red Hat libssh. Logic errors: denial of service | Low3.1 | No fix yet |
| Jul 21 | Red Hat libssh: use after free | Medium4.3 | No fix yet |
| Jul 21 | Red Hat libssh. On: improper authorization | High8.8 | No fix yet |