========================================================================
CVE-2026-102504                                      CPAN Security Group
========================================================================

        CVE ID:  CVE-2026-102504

  Distribution:  Imager
      Versions:  before 1.037
      MetaCPAN:  https://metacpan.org/dist/Imager
      VCS Repo:  https://github.com/tonycoz/imager

Imager versions before 1.037 for Perl exit the process reading a raw
image with an out-of-range raw_datachannels value in i_readraw_wiol

Description
-----------
Imager versions before 1.037 for Perl exit the process reading a raw
image with an out-of-range raw_datachannels value in i_readraw_wiol.

Nothing range-checks raw_datachannels. The line buffer is sized as the
image width times the channel count with no overflow check, so a
negative or very large count requests an excessive allocation. When it
fails, Imager's allocator calls exit(3).

Passing an untrusted raw_datachannels value to Imager->read() triggers
an uncatchable exit.

Problem types
-------------
- CWE-789 Memory Allocation with Excessive Size Value
- CWE-190 Integer Overflow or Wraparound

Solutions
---------
Upgrade to Imager 1.037 or later.

References
----------
https://github.com/tonycoz/imager/security/advisories/GHSA-g549-r73g-x7x6
https://github.com/tonycoz/imager/commit/21b0df9eef1dffe1fdcd3706bfea9f1338031679.patch
https://metacpan.org/release/TONYC/Imager-1.037/changes

Timeline
--------
- 2026-09-30: Version 1.037 released with fix.

Credits
-------
ahanwate, finder