Description
In LibTIFF 4.0.7, the TIFFReadDirEntryLong8Array function in libtiff/tif_dirread.c mishandles a malloc operation, which allows attackers to cause a denial of service (memory leak within the function _TIFFmalloc in tif_unix.c) via a crafted file.
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 | 4.0.8-1 | — |
| Debian 13 | tiff | 4.0.8-1 | — |
| Debian 12 | tiff | 4.0.8-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | tiff | 4.0.6-1ubuntu0.3 | USN-3602-1 |
| Ubuntu 14.04 LTS | tiff | 4.0.3-7ubuntu0.8 | USN-3602-1 |
Advisories 1
- USN-3602-1 tiff vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026