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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

Red HatCVE-2026-16517

Red Hat libarchive: integer overflow

Red Hat

CVE-2026-16517 · Published Jul 21, 2026 · updated Nov 6, 2026

Low2.9
No fix yet
Red Hat advisory

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

PackageAffectedFixed in
Red Hat Enterprise Linux 6
Product
all versionsNo fix yet
Red Hat Enterprise Linux 7
Product
all versionsNo fix yet
Red Hat Enterprise Linux 8
Product
all versionsNo fix yet
Red Hat Enterprise Linux 9
Product
all versionsNo fix yet
Red Hat OpenShift Container Platform 4
Product
all versionsNo fix yet
all versionsNo fix yet
Red Hat OpenShift Container Platform 5
Product
all versionsNo fix yet
Details and references

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