Bug 2555848 (CVE-2026-112390) - CVE-2026-112390 pillow: Pillow: Denial of Service via infinite loop during crafted MIC image parsing
Summary: CVE-2026-112390 pillow: Pillow: Denial of Service via infinite loop during cr...
Keywords:
Status: NEW
Alias: CVE-2026-112390
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-19 20:52 UTC by OSIDB Bzimport
Modified: 2026-10-31 08:31 UTC (History)
59 users (show)

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Description OSIDB Bzimport 2026-10-19 20:52:23 UTC 
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.
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