Local crash via unchecked EXIF word read
Published Sep 14, 2026 · Updated Sep 14, 2026
Out-of-bounds read in Jhead 3.0 through 3.3 allows local users to crash the utility by supplying a crafted JPEG with EXIF data. Get16u in exif.c unconditionally reads two bytes from the supplied EXIF pointer without receiving a buffer length or checking that both bytes remain in bounds. The attacker must cause the command-line utility or an automated image-processing workflow to parse the file; the bounded reported consequence is a process crash and resulting service interrupt.
Summary
What happened
Out-of-bounds read in Jhead 3.0 through 3.3 allows local users to crash the utility by supplying a crafted JPEG with EXIF data. Get16u in exif.c unconditionally reads two bytes from the supplied EXIF pointer without receiving a buffer length or checking that both bytes remain in bounds. The attacker must cause the command-line utility or an automated image-processing workflow to parse the file; the bounded reported consequence is a process crash and resulting service interrupt.
The record
- CVE
- CVE-2026-90681
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Matthias Wandel
- Product
- Jhead
- Classifications
- T1204.002
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.0
- Affected versionversion=3.1
- Affected versionversion=3.2
- Affected versionversion=3.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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