CVE-2026-6654

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.

Score

CVSS 3.1 7.3 High

Status

Modified - security@mozilla.org

Published

2026-04-20

Last modified

2026-10-26

Weaknesses

CWE-1341, CWE-415, CWE-416

Affected products

• Thin-vec (Mozilla)
• Enterprise Linux (Redhat)
• Enterprise Linux Ai (Redhat)

References

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