Description
The tagCompare function in tif_dirinfo.c in the thumbnail tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (out-of-bounds read) via vectors related to field_tag matching.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tiff | 4.0.6-3 | — |
| Debian 13 | tiff | 4.0.6-3 | — |
| Debian 12 | tiff | 4.0.6-3 | — |
| Debian 7 | tiff | 4.0.2-6+deb7u7 | DLA-693-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | tiff | No fix yet | — |
| Ubuntu Pro 14.04 LTS | tiff | No fix yet | — |
Advisories 1
- DLA-693-1 tiff - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- [oss-security] 20160408 CVE-2016-3634 - libtiff illegel read mailing-list
- 93335 vdb-entry
- GLSA-201701-16 vendor-advisory
- http://bugzilla.maptools.org/show_bug.cgi?id=2547