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fkie_cve-2026-88839

BusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.

GHSA-fr4j-cp66-9wc4

BusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.

RHSA-2026:72111 — Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

busybox: busybox: httpd silently fails open when IP deny rules contain invalid CIDR prefix lengths busybox: busybox: romfs volume ID parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow busybox: busybox: dpkg read_package_field() steps past NUL terminator, causing out-of-bounds read on malformed .deb packages busybox: busybox: httpd misidentifies yescrypt password hashes as plaintext, inverting authentication busybox: busybox: passwd/group parser writes heap pointers out of bounds due to stale tokenize() endpoint

UBUNTU-CVE-2026-88839

Affected: Ubuntu:Pro:14.04:LTS: busybox, Ubuntu:Pro:16.04:LTS: busybox, Ubuntu:Pro:18.04:LTS: busybox, Ubuntu:20.04:LTS: busybox, Ubuntu:22.04:LTS: busybox, Ubuntu:24.04:LTS: busybox, Ubuntu:26.04:LTS: busybox

BusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.