CPANSA-Imager-2026-93019: Imager vulnerability

Publisher giterlizzi Document category csaf_security_advisory
Initial release date 2026-09-18T00:00:00 Engine CSAF Perl Toolkit 0.26
Current release date 2026-09-18T00:00:00 Build Date
Current version 1 Status final
CVSS v3.1 Base Score 9.1 Severity Critical
Original language Language en
Also referred to

Vulnerability Description

Imager versions before 1.036 for Perl exit the process reading a TGA with a colour map length of 32768 or more in tga_palette_read.

The reader unpacks the two-byte colour map length into a signed short, so a length of 32768 or more becomes negative. tga_palette_read() casts that value to size_t and asks mymalloc() for a size near SIZE_MAX. The allocation fails and Imager's allocator calls exit(3).

Reading an attacker-supplied file through Imager->read() triggers an uncatchable exit.

Vulnerabilities

CVE-2026-93019

Vulnerability Description

Imager versions before 1.036 for Perl exit the process reading a TGA with a colour map length of 32768 or more in tga_palette_read.

The reader unpacks the two-byte colour map length into a signed short, so a length of 32768 or more becomes negative. tga_palette_read() casts that value to size_t and asks mymalloc() for a size near SIZE_MAX. The allocation fails and Imager's allocator calls exit(3).

Reading an attacker-supplied file through Imager->read() triggers an uncatchable exit.

Weakness CWE-196 : Unsigned to Signed Conversion Error

Product status

Known affected
Product Score
Imager less than 1.036
CVSS Version CVSS Vector CVSS Base Score CVSS Base Severity
3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H 9.1 Critical
Fixed

giterlizzi

Namespace: https://github.com/giterlizzi/

gdt@cpan.org

References

Revision history

Version Date of the revision Summary of the revision
1 Fri Sep 18 00:00:00 2026 First release

Sharing rules

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