Vim is an open source, command line text editor. Prior to 9.2.0670, get_text_props() in src/textprop.c reads a uint16 property count stored inline after a line's text and returns it as the number of 32-byte textprop_T entries that follow. The only check is a floor that guarantees room for a single entry; the count is never checked against the amount of data actually present. A line that declares a large count while carrying little data causes consumers to read far past the end of the line buffer. Such a line can be delivered through a crafted undo file, leading to a crash. This vulnerability is fixed in 9.2.0670.
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Affected Vendors & Products
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History
Thu, 25 Jun 2026 16:30:00 +0000
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Thu, 25 Jun 2026 15:45:00 +0000
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| Description | Vim is an open source, command line text editor. Prior to 9.2.0670, get_text_props() in src/textprop.c reads a uint16 property count stored inline after a line's text and returns it as the number of 32-byte textprop_T entries that follow. The only check is a floor that guarantees room for a single entry; the count is never checked against the amount of data actually present. A line that declares a large count while carrying little data causes consumers to read far past the end of the line buffer. Such a line can be delivered through a crafted undo file, leading to a crash. This vulnerability is fixed in 9.2.0670. | |
| Title | Vim: Out-of-bounds Read in Text Property Count | |
| Weaknesses | CWE-125 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-25T16:04:53.210Z
Reserved: 2026-06-24T13:21:20.730Z
Link: CVE-2026-57451
Updated: 2026-06-25T16:04:33.828Z
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OpenCVE Enrichment
Updated: 2026-06-25T16:45:03Z