| Name | CVE-2016-6354 |
| Description | Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-3653-1, DSA-3653-2 |
| Debian Bugs | 832768 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| flex (PTS) | bullseye | 2.6.4-8 | fixed |
| trixie, sid, bookworm | 2.6.4-8.2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| flex | source | wheezy | (not affected) | | | |
| flex | source | jessie | 2.5.39-8+deb8u2 | | DSA-3653-2 | |
| flex | source | (unstable) | 2.6.1-1 | | | 832768 |
Notes
[wheezy] - flex <not-affected> (Issue introduced with 2.5.36)
Intorduced by: https://github.com/westes/flex/commit/9ba3187a537d6a58d345f2874d06087fd4050399 (flex-2-5-36)
Fixed by: https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466 (v2.6.1)