CVE-2026-6654

Summary

Double-Free / Use-After-Free (UAF) in the IntoIter::drop and ThinVec::clear functions in the thin_vec crate. A panic in ptr::drop_in_place skips setting the length to zero.

Affected Software

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

thin-vec: mozilla/thin-vec: Memory corruption vulnerability via Double-Free/Use-After-Free

Additional References

• https://access.redhat.com/security/cve/CVE-2026-6654
• https://bugzilla.redhat.com/show_bug.cgi?id=2459689
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6654.json

References

• https://github.com/mozilla/thin-vec/security/advisories/GHSA-xphw-cqx3-667j

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