Bug 2458856 (CVE-2026-40192)

Summary:	CVE-2026-40192 Pillow: Pillow: Denial of Service via decompression bomb in FITS image processing
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	alinfoot, anpicker, anthomas, bbrownin, bdettelb, bparees, caswilli, cmyers, derez, dfreiber, dnakabaa, doconnor, drow, dschmidt, dtrifiro, ebourniv, ehelms, erezende, ggainey, hasun, jburrell, jfula, jkoehler, jlanda, jmitchel, jowilson, jpasqual, juwatts, jwong, kaycoth, kshier, lcouzens, lgallett, lphiri, mhayden, mhulan, nmoumoul, nyancey, omaciel, ometelka, osousa, pcreech, ptisnovs, rbryant, rchan, rhel-process-autobot, sbunciak, sdoran, simaishi, smallamp, smcdonal, stcannon, syedriko, teagle, tmalecek, ttakamiy, vkumar, watson-tool-maintainers, weaton, xdharmai, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Pillow, a Python imaging library. This vulnerability allows a remote attacker to trigger a denial of service (DoS) by providing a specially crafted FITS image file. The library's failure to limit the amount of GZIP-compressed data during decoding can lead to unbounded memory consumption, causing the system to crash or experience severe performance issues.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2459001, 2459007
Bug Blocks:

Description OSIDB Bzimport 2026-04-16 00:01:13 UTC

Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.

Comment 3 errata-xmlrpc 2026-06-09 11:02:26 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-2026:24762 https://access.redhat.com/errata/RHSA-2026:24762

Comment 4 errata-xmlrpc 2026-06-09 11:03:58 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-2026:24761 https://access.redhat.com/errata/RHSA-2026:24761

Comment 5 errata-xmlrpc 2026-06-18 12:18:40 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-2026:27076 https://access.redhat.com/errata/RHSA-2026:27076

Comment 6 errata-xmlrpc 2026-07-01 17:27:37 UTC

This issue has been addressed in the following products:

  Red Hat Satellite 6.17 for RHEL 9

Via RHSA-2026:34366 https://access.redhat.com/errata/RHSA-2026:34366

Comment 7 errata-xmlrpc 2026-07-01 17:27:38 UTC

This issue has been addressed in the following products:

  Red Hat Satellite 6.17 for RHEL 9

Via RHSA-2026:34366 https://access.redhat.com/errata/RHSA-2026:34366

Comment 8 errata-xmlrpc 2026-07-01 17:28:45 UTC

This issue has been addressed in the following products:

  Red Hat Satellite 6.18 for RHEL 9

Via RHSA-2026:34368 https://access.redhat.com/errata/RHSA-2026:34368