Bug 2497455 (CVE-2026-55380) - CVE-2026-55380 python-pillow: Pillow: Denial of Service via crafted GD 2.x image file
Summary: CVE-2026-55380 python-pillow: Pillow: Denial of Service via crafted GD 2.x im...
Keywords:
Status: NEW
Alias: CVE-2026-55380
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2497659 2497660
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-06 20:02 UTC by OSIDB Bzimport
Modified: 2026-08-15 08:28 UTC (History)
59 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:39127 0 None None None 2026-07-14 08:41:53 UTC
Red Hat Product Errata RHSA-2026:48759 0 None None None 2026-07-30 11:46:37 UTC
Red Hat Product Errata RHSA-2026:48760 0 None None None 2026-07-30 11:41:55 UTC
Red Hat Product Errata RHSA-2026:50222 0 None None None 2026-08-04 15:56:31 UTC
Red Hat Product Errata RHSA-2026:50223 0 None None None 2026-08-04 15:59:28 UTC
Red Hat Product Errata RHSA-2026:50263 0 None None None 2026-08-04 16:07:58 UTC
Red Hat Product Errata RHSA-2026:50319 0 None None None 2026-08-04 17:58:07 UTC
Red Hat Product Errata RHSA-2026:50336 0 None None None 2026-08-04 18:44:46 UTC
Red Hat Product Errata RHSA-2026:52551 0 None None None 2026-08-10 03:57:58 UTC

Description OSIDB Bzimport 2026-07-06 20:02:05 UTC 
Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.
Comment 4 errata-xmlrpc 2026-07-14 08:41:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:39127 https://access.redhat.com/errata/RHSA-2026:39127
Comment 7 errata-xmlrpc 2026-07-30 11:41:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:48760 https://access.redhat.com/errata/RHSA-2026:48760
Comment 8 errata-xmlrpc 2026-07-30 11:46:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:48759 https://access.redhat.com/errata/RHSA-2026:48759
Comment 9 errata-xmlrpc 2026-08-04 15:56:27 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.17 for RHEL 9

Via RHSA-2026:50222 https://access.redhat.com/errata/RHSA-2026:50222
Comment 10 errata-xmlrpc 2026-08-04 15:59:25 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.16 for RHEL 8
  Red Hat Satellite 6.16 for RHEL 9

Via RHSA-2026:50223 https://access.redhat.com/errata/RHSA-2026:50223
Comment 11 errata-xmlrpc 2026-08-04 16:07:54 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.18 for RHEL 9

Via RHSA-2026:50263 https://access.redhat.com/errata/RHSA-2026:50263
Comment 12 errata-xmlrpc 2026-08-04 17:57:59 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:50319 https://access.redhat.com/errata/RHSA-2026:50319
Comment 13 errata-xmlrpc 2026-08-04 18:44:42 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 9
  Red Hat Ansible Automation Platform 2.6 for RHEL 10

Via RHSA-2026:50336 https://access.redhat.com/errata/RHSA-2026:50336
Comment 14 errata-xmlrpc 2026-08-10 03:57:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:52551 https://access.redhat.com/errata/RHSA-2026:52551
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