CVE-2016-6354
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
9.8
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.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.6.1-1 |
| sid | Fixed | 2.6.1-1 |
| forky | Fixed | 2.6.1-1 |
| bullseye | Fixed | 2.6.1-1 |
| bookworm | Fixed | 2.6.1-1 |
| 8.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| westes | flex | {"endIncluding":"2.6.0"} | |
References
- http://www.debian.org/security/2016/dsa-3653
- http://www.openwall.com/lists/oss-security/2016/07/18/8
- http://www.openwall.com/lists/oss-security/2016/07/26/12
- https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466
- https://security.gentoo.org/glsa/201701-31
- https://www.suse.com/security/cve/CVE-2016-6354.html
- https://security-tracker.debian.org/tracker/CVE-2016-6354
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.