Description
A flaw has been found in LibTIFF 4.7.0. This affects the function _TIFFmallocExt/_TIFFCheckRealloc/TIFFHashSetNew/InitCCITTFax3 of the file tools/tiffcmp.c of the component tiffcmp. Executing manipulation can lead to memory leak. The attack is restricted to local execution. This attack is characterized by high complexity. It is indicated that the exploitability is difficult. The exploit has been published and may be used. There is ongoing doubt regarding the real existence of this vulnerability. This patch is called ed141286a37f6e5ddafb5069347ff5d587e7a4e0. It is best practice to apply a patch to resolve this issue. A researcher disputes the security impact of this issue, because "this is a memory leak on a command line tool that is about to exit anyway". In the reply the project maintainer declares this issue as "a simple 'bug' when leaving the command line tool and (...) not a security issue at all".
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | LibTIFF | 4.7.0 | — |
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 | 4.7.0-4 | — |
| Debian 13 | tiff | 4.7.0-3+deb13u1 | — |
| Debian 12 | tiff | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | texmaker +1 | No fix yet | — |
| Ubuntu 26.04 LTS | texmaker | No fix yet | — |
| Ubuntu 26.04 LTS | tiff | 4.7.0-3ubuntu3 | — |
| Ubuntu 25.10 | texmaker +1 | No fix yet | — |
| Ubuntu 25.10 | tiff | 4.7.0-3ubuntu3 | — |
| Ubuntu 24.04 LTS | tiff | 4.5.1+git230720-4ubuntu2.4 | USN-7783-1 |
| Ubuntu 22.04 LTS | neuron | No fix yet | — |
| Ubuntu 22.04 LTS | tiff | 4.3.0-6ubuntu0.12 | USN-7783-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | neuron | No fix yet | — |
| Ubuntu 18.04 LTS | neuron | No fix yet | — |
| Ubuntu 16.04 LTS | texmaker | No fix yet | — |
| Ubuntu Pro 26.04 LTS | qtwebengine-opensource-src | No fix yet | — |
| Ubuntu Pro 24.04 LTS | texmaker +1 | No fix yet | — |
| Ubuntu Pro 22.04 LTS | texmaker +1 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | texmaker +1 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | tiff | 4.1.0+git191117-2ubuntu0.20.04.14+esm2 | USN-7783-1 |
| Ubuntu Pro 18.04 LTS | texmaker +1 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | tiff | 4.0.9-5ubuntu0.10+esm9 | USN-7783-1 |
| Ubuntu Pro 16.04 LTS | gdal | No fix yet | — |
| Ubuntu Pro 16.04 LTS | tiff | 4.0.6-1ubuntu0.8+esm19 | USN-7783-1 |
| Ubuntu Pro 14.04 LTS | gdal | No fix yet | — |
| Ubuntu Pro 14.04 LTS | tiff | 4.0.3-7ubuntu0.11+esm16 | USN-7783-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | tiff | 4.0.9-150000.45.55.1 | SUSE-SU-2025:03348-1, SUSE-SU-2025:03345-1 |
| SLES 15 SP6 | tiff | 4.0.9-150000.45.55.1 | SUSE-SU-2025:03348-1, SUSE-SU-2025:03345-1 |
| SLES 12 SP5 | tiff | 4.0.9-44.94.1 | SUSE-SU-2025:03346-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | tiff | 4.7.1-160000.1.1 | SUSE-SU-2025:21009-1 |
| SLES 16.0 | tiff | 4.7.1-160000.1.1 | SUSE-SU-2025:21009-1 |
| SLE Micro 6.2 | tiff | 4.7.1-160000.1.1 | SUSE-SU-2025:21032-1 |
| SLE Micro 6.1 | tiff | 4.7.1-slfo.1.1_1.1 | SUSE-SU-2025:20971-1 |
| SLE Micro 6.0 | tiff | 4.7.1-1.1 | SUSE-SU-2025:21037-1 |
| SLE Micro 5.5 | tiff | 4.0.9-150000.45.55.1 | SUSE-SU-2025:03345-1 |
| SLE Micro 5.4 | tiff | 4.0.9-150000.45.55.1 | SUSE-SU-2025:03345-1 |
| SLE Micro 5.3 | tiff | 4.0.9-150000.45.55.1 | SUSE-SU-2025:03345-1 |
| SLE Micro 5.2 | tiff | 4.0.9-150000.45.55.1 | SUSE-SU-2025:03345-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tiff | 4.7.0-8.1 | openSUSE-SU-2025:15486-1 |
| openSUSE Tumbleweed | tkimg | 2.1.0-1.1 | openSUSE-SU-2025:15556-1 |
| openSUSE Leap 16.0 | tiff +1 | 4.7.1-160000.1.1 | openSUSE-SU-2025:20049-1 |
| openSUSE Leap 15.6 | tiff | 4.7.0-150600.3.18.1 | SUSE-SU-2025:03348-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | tiff | 4.7.1-r0 | — |
| Alpine v3.23 | tiff | 4.7.1-r0 | — |
| Alpine v3.22 | tiff | 4.7.1-r0 | — |
| Alpine v3.21 | tiff | 4.7.1-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libtiff +3 | 4.4.0-4.amzn2023.0.22 | ALAS2023-2025-1176 |
| Amazon Linux 2 | libtiff +3 | 4.0.3-35.amzn2.0.25 | ALAS2-2025-3004 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libtiff | 4.6.0-8 | — |
| Azure Linux 2 (CBL-Mariner) | libtiff | 4.6.0-8 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | tiff | 4.7.0-r6 | — |
Advisories 16
- WID-SEC-2026-0349 Dell Avamar und NetWorker: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- WID-SEC-2026-1730 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 16, 2026
- USN-7783-1 tiff vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2025:20049-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15556-1 tkimg-2.1.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15486-1 libtiff-devel-32bit-4.7.0-8.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21009-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20971-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21037-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03346-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03345-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03348-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21032-1 Security update for tiff SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2025-1863 libTIFF: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 27, 2025
- ALAS2-2025-3004 Low: libtiff security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 29, 2025
- ALAS2023-2025-1176 Low: libtiff security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 15, 2025
References
- VDB-320543 | LibTIFF tiffcmp tiffcmp.c InitCCITTFax3 memory leak vdb-entry technical-description
- VDB-320543 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #630506 | libtiff tiffcmp 4.7.0+ (latest master branch) Memory Leak third-party-advisory
- Submit #630507 | libtiff tiffcmp 4.7.0+ (latest master branch) Memory Leak (Duplicate) third-party-advisory
- https://gitlab.com/libtiff/libtiff/-/issues/728 issue-tracking
- https://gitlab.com/libtiff/libtiff/-/merge_requests/747 patch
- https://drive.google.com/file/d/1FWhmkzksH8-qU0ZM6seBzGNB3aPnX3G8/view?usp=sharing exploit
- https://gitlab.com/libtiff/libtiff/-/commit/ed141286a37f6e5ddafb5069347ff5d587e7a4e0 patch
- http://www.libtiff.org/ product