Description
Pillow is a Python imaging library. Prior to 12.3.0, Pillow's ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform's declared output mode. This issue is fixed in version 12.3.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| python-pillow | Pillow | < 12.3.0 | — |
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 | 12.3.0-1 | — |
| Debian 13 | pillow | No fix yet | — |
| Debian 12 | pillow | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | pillow | 12.1.1-2ubuntu1.4 | USN-8999-1 |
| Ubuntu 24.04 LTS | pillow | 10.2.0-1ubuntu1.4 | USN-8999-1 |
| Ubuntu 22.04 LTS | pillow | 9.0.1-1ubuntu0.6 | USN-8999-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | pillow +1 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | pillow | No fix yet | — |
| Ubuntu Pro 16.04 LTS | pillow | No fix yet | — |
| Ubuntu Pro 14.04 LTS | pillow | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | python-Pillow | 7.2.0-150300.3.30.1 | SUSE-SU-2026:3084-1 |
| SLES 15 SP6 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
| SLES 15 SP5 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
| SLES 15 SP4 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
| SLES 3 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | python-Pillow | 11.3.0-160000.8.1 | SUSE-SU-2026:23228-1, SUSE-SU-2026:23217-1 |
| SLES for SAP 15 SP6 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
| SLES for SAP 15 SP5 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
| SLES for SAP 15 SP4 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
| SLES 16.0 | python-Pillow | 11.3.0-160000.8.1 | SUSE-SU-2026:23228-1, SUSE-SU-2026:23217-1 |
| SLE HPC 15 SP5 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
| SLE HPC 15 SP4 | python-Pillow | 9.5.0-150400.5.25.1 | SUSE-SU-2026:3268-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | python-Pillow | 11.3.0-160000.8.1 | openSUSE-SU-2026:21544-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | python3-pillow +2 | 9.4.0-2.amzn2023.0.10 | ALAS2023-2026-2013 |
| Amazon Linux 2 | python-pillow +4 | 2.0.0-23.gitd1c6db8.amzn2.0.20 | ALAS2-2026-3839 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | open-webui | 0.10.2-r1 | — |
| Wolfi rolling | superset-6.0 | 6.0.0-r13 | — |
| Wolfi rolling | superset-6.1 | 6.1.0-r6 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | pillow | < 12.3.0 | 12.3.0 | GHSA-9hw9-ch79-4vh6 |
Advisories 8
- USN-8999-1 pillow vulnerabilities Ubuntu Security Notices (USN) · Nov 5, 2026
- SUSE-SU-2026:23228-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Aug 27, 2026
- SUSE-SU-2026:23217-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Aug 27, 2026
- openSUSE-SU-2026:21544-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Aug 12, 2026
- ALAS2-2026-3839 Important: python-pillow security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 4, 2026
- ALAS2023-2026-2013 Important: python-pillow security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 4, 2026
- SUSE-SU-2026:3268-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Jul 28, 2026
- SUSE-SU-2026:3084-1 Security update for python-Pillow SUSE / openSUSE Security Updates · Jul 17, 2026