Description
Pillow is a Python imaging library. From 7.2.0 until 13.0.0, Pillow can enter an infinite loop while determining the frame count of a MIC image. MicImageFile inherits TIFF frame traversal, but MicImageFile.tell reports the OLE stream index and its seek() resets TIFF frame state, so an embedded TIFF with at least three IFDs never advances. When an application with olefile installed reads n_frames or saves all frames from a crafted MIC file, the non-advancing traversal can hold a worker at full CPU indefinitely. This issue is fixed in version 13.0.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| python-pillow | Pillow | >= 7.2.0, < 13.0.0 | — |
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 | pillow | No fix yet | — |
| Debian 13 | pillow | No fix yet | — |
| Debian 12 | pillow | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | pillow | 12.3.0-1ubuntu2 | USN-9064-1 |
| Ubuntu 26.04 LTS | pillow | 12.1.1-2ubuntu1.5 | USN-9064-1 |
| Ubuntu 24.04 LTS | pillow | 10.2.0-1ubuntu1.5 | USN-9064-1 |
| Ubuntu 22.04 LTS | pillow | 9.0.1-1ubuntu0.7 | USN-9064-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | pillow | 7.0.0-4ubuntu0.9+esm2 | USN-9064-1 |
| Ubuntu Pro 20.04 LTS | pillow-python2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | pillow | 5.1.0-1ubuntu0.8+esm3 | USN-9064-1 |
| Ubuntu Pro 16.04 LTS | pillow | 3.1.2-0ubuntu1.6+esm4 | USN-9064-1 |
| Ubuntu Pro 14.04 LTS | pillow | 2.3.0-1ubuntu3.4+esm6 | USN-9064-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | python-Pillow | 7.2.0-150300.3.33.1 | SUSE-SU-2026:5038-1 |
| SLES 15 SP6 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
| SLES 15 SP5 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
| SLES 15 SP4 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
| SLES 3 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | python-Pillow | 11.3.0-160000.9.1 | SUSE-SU-2026:24656-1 |
| SLES for SAP 15 SP6 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
| SLES for SAP 15 SP5 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
| SLES for SAP 15 SP4 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
| SLES 16.0 | python-Pillow | 11.3.0-160000.9.1 | SUSE-SU-2026:24656-1 |
| SLE HPC 15 SP5 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
| SLE HPC 15 SP4 | python-Pillow | 9.5.0-150400.5.28.1 | SUSE-SU-2026:5194-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-Pillow | 13.0.0-1.1 | openSUSE-SU-2026:12230-1 |
| openSUSE Leap 16.0 | python-Pillow | 11.3.0-160000.9.1 | openSUSE-SU-2026:22246-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | python3-pillow +2 | 9.4.0-2.amzn2023.0.12 | ALAS2023-2026-3411 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | open-webui | 0.12.3-r6 | — |
| Wolfi rolling | py3.10-pillow | No fix yet | — |
| Wolfi rolling | py3.11-pillow +2 | 13.0.0-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | pillow | >= 7.2.0, < 13.0.0 | 13.0.0 | GHSA-22hg-r758-rrw9 |
Advisories 7
- USN-9064-1 pillow vulnerabilities Ubuntu Security Notices (USN) · Nov 13, 2026
- SUSE-SU-2026:24656-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Nov 12, 2026
- SUSE-SU-2026:5194-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Nov 12, 2026
- openSUSE-SU-2026:22246-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Nov 11, 2026
- ALAS2023-2026-3411 Important: python-pillow security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 9, 2026
- SUSE-SU-2026:5038-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Nov 3, 2026
- openSUSE-SU-2026:12230-1 python313-Pillow-13.0.0-1.1 on GA media SUSE / openSUSE Security Updates · Oct 23, 2026