CVE-2026-102505

Summary

Imager versions before 1.037 for Perl overflow a heap buffer fetching float samples from a paletted image in i_gsampf_fp.

For a paletted image, getsamples() with type "float" allocates a buffer of one sample per pixel and fetches every requested channel of each pixel into it. Requesting more than one channel writes past its end.

An attacker-supplied image controls the overflowing bytes through its palette.

Affected Software

Weaknesses

• CWE-131: CWE-131 Incorrect Calculation of Buffer Size

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/10/01/10

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/tonycoz/imager/security/advisories/GHSA-4rx6-cgv3-fmxp
• https://github.com/tonycoz/imager/commit/aae49c6be065aa467e834105c816359394a634db.patch
• https://metacpan.org/release/TONYC/Imager-1.037/changes

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