CVE-2026-90954: Busybox: busybox: dpkg-deb extraction-root escape via per-ar-member deferred symlink flush

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U

Exploit Status

Not Exploited

Patch Tuesday

2026-Oct

Released

2026-10-21

EPSS Score

0.20% (percentile: 8.9%)

Affected Products (1)

Other

• 21821-17084

Revision History

• 2026-10-21: Information published.