CVE-2026-112202 TONYC CVE debrief

Who should care

Defenders responsible for Perl applications using Imager::File::GIF should assess exposure and apply patches. This includes operators, platform administrators, vulnerability management teams, and security teams who manage or use affected systems. They should prioritize verifying Imager::File::GIF versions and assessing exposure due to potential adjacent heap memory disclosure and process crashes.

Why it matters

Defenders should prioritize verifying Imager::File::GIF versions and assessing exposure due to potential adjacent heap memory disclosure and process crashes.

• Potential adjacent heap memory disclosure through decoded output
• Possible process crash due to out-of-bounds reads

Technical summary

Imager::File::GIF versions before 1.006 for Perl allow out-of-bounds reads when consolidating GIF images with `gif_consolidate => 1`. The i_readgif_low routine reads beyond the heap allocation and copies the bytes into output pixels. The default GIF reader is not affected. The same code ships bundled in the Imager distribution. An attacker supplying a crafted GIF can disclose adjacent heap memory through the decoded output and may crash the process. Defenders should prioritize verifying Imager::File::GIF versions, assessing exposure, and applying patches.

Defensive priority

Defenders should prioritize verifying Imager::File::GIF versions, assessing exposure, and applying patches.

Recommended defensive actions

• Verify Imager::File::GIF version and upgrade to 1.006 or later
• Assess exposure and apply patches
• Monitor for potential adjacent heap memory disclosure
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability in Imager::File::GIF versions before 1.006, allowing out-of-bounds reads when consolidating GIF images. Evidence is limited to public CVE and source item descriptions. Defenders should verify Imager::File::GIF versions, assess exposure, and apply patches. The CVE record was published on 2026-10-20T22:37:43.477Z and has not been modified since then. There are no additional details on known affected scope or vendor guidance beyond the CVE and source item information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.