| Name | CVE-2026-88840 |
| Description | BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| busybox (PTS) | bookworm | 1:1.35.0-4+deb12u1 | fixed |
| trixie | 1:1.37.0-6 | fixed |
| forky, sid | 1:1.38.0-3 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| busybox | source | bookworm | (not affected) | | | |
| busybox | source | trixie | (not affected) | | | |
| busybox | source | (unstable) | (unfixed) | | | |
Notes
[trixie] - busybox <not-affected> (Vulnerable code not present)
[bookworm] - busybox <not-affected> (Vulnerable code not present)
https://bugzilla.redhat.com/show_bug.cgi?id=2531354
Introduced by: https://git.busybox.net/busybox/commit/archival?id=657fbcd62c6cb1e15692ad471bc94cfe6efd8a5f (1_38_0)