Application crash via null InkNames pointer arithmetic
Published Jun 30, 2023 · Updated Nov 3, 2025
Null pointer dereference in Fedora Linux's libtiff package allows local users to crash tiffcp by supplying a crafted TIFF image. In tif_dir.c's countInkNamesString function, a zero-length InkNames value leaves the string pointer null, yet the code adds the zero length to that pointer before checking the length. A user must cause tiffcp to process the malformed file; the consequence is limited to termination of that utility, with no reported data disclosure or modification.
Summary
What happened
Null pointer dereference in Fedora Linux's libtiff package allows local users to crash tiffcp by supplying a crafted TIFF image. In tif_dir.c's countInkNamesString function, a zero-length InkNames value leaves the string pointer null, yet the code adds the zero length to that pointer before checking the length. A user must cause tiffcp to process the malformed file; the consequence is limited to termination of that utility, with no reported data disclosure or modification.
The record
- CVE
- CVE-2023-2908
- Published
- Jun 30, 2023
- Updated
- Nov 3, 2025
- Vendor
- Fedora Project
- Product
- Fedora Linux
- Classifications
- CWE-476, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 30, 2023CVE publishedPublication date reported by the CVE source.
- Nov 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- tiffcp crafted TIFF proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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