A null pointer dereference occurs in the function break_word_for_overflow_wrap() in MuPDF 1.26.4 when rendering a malformed EPUB document. Specifically, the function calls fz_html_split_flow() to split a FLOW_WORD node, but does not check if node->next is valid before accessing node->next->overflow_wrap, resulting in a crash if the split fails or returns a partial node chain.
Metrics
Affected Vendors & Products
References
History
Wed, 08 Oct 2025 18:15:00 +0000
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First Time appeared |
Artifex
Artifex mupdf |
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CPEs | cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:* | |
Vendors & Products |
Artifex
Artifex mupdf |
Thu, 25 Sep 2025 15:00:00 +0000
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References |
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Wed, 24 Sep 2025 19:15:00 +0000
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Weaknesses | CWE-476 | |
Metrics |
cvssV3_1
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Tue, 23 Sep 2025 18:15:00 +0000
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Description | A null pointer dereference occurs in the function break_word_for_overflow_wrap() in MuPDF 1.26.4 when rendering a malformed EPUB document. Specifically, the function calls fz_html_split_flow() to split a FLOW_WORD node, but does not check if node->next is valid before accessing node->next->overflow_wrap, resulting in a crash if the split fails or returns a partial node chain. | |
References |
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2025-09-25T14:47:03.426Z
Reserved: 2025-08-16T00:00:00.000Z
Link: CVE-2025-55780

Updated: 2025-09-24T18:37:16.700Z

Status : Analyzed
Published: 2025-09-23T18:15:34.743
Modified: 2025-10-08T18:04:01.977
Link: CVE-2025-55780

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