CVE-2026-6654: Vulnerability in Mozilla thin-vec
CVE-2026-6654 is a vulnerability in the Mozilla thin-vec crate involving double-free and use-after-free conditions in the IntoIter::drop and ThinVec::clear functions. The issue arises because a panic in ptr::drop_in_place prevents the length from being reset to zero, potentially leading to memory safety errors. There is no information about affected versions or known exploits in the wild. No patch or official remediation guidance has been provided yet.
AI Analysis
Technical Summary
This vulnerability in the thin-vec Rust crate maintained by Mozilla involves double-free and use-after-free bugs triggered when a panic occurs during the drop_in_place operation. Specifically, the length field is not reset to zero after a panic, causing subsequent operations to access freed memory. The affected functions are IntoIter::drop and ThinVec::clear. No CVSS score or patch information is currently available.
Potential Impact
The vulnerability can lead to memory safety issues such as double-free and use-after-free, which may cause application crashes or undefined behavior. There is no evidence of active exploitation in the wild. The impact is limited to applications using the thin-vec crate and invoking the affected functions under panic conditions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official Mozilla or thin-vec project communications for updates. No specific workaround or mitigation is provided at this time.
CVE-2026-6654: Vulnerability in Mozilla thin-vec
Description
CVE-2026-6654 is a vulnerability in the Mozilla thin-vec crate involving double-free and use-after-free conditions in the IntoIter::drop and ThinVec::clear functions. The issue arises because a panic in ptr::drop_in_place prevents the length from being reset to zero, potentially leading to memory safety errors. There is no information about affected versions or known exploits in the wild. No patch or official remediation guidance has been provided yet.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in the thin-vec Rust crate maintained by Mozilla involves double-free and use-after-free bugs triggered when a panic occurs during the drop_in_place operation. Specifically, the length field is not reset to zero after a panic, causing subsequent operations to access freed memory. The affected functions are IntoIter::drop and ThinVec::clear. No CVSS score or patch information is currently available.
Potential Impact
The vulnerability can lead to memory safety issues such as double-free and use-after-free, which may cause application crashes or undefined behavior. There is no evidence of active exploitation in the wild. The impact is limited to applications using the thin-vec crate and invoking the affected functions under panic conditions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official Mozilla or thin-vec project communications for updates. No specific workaround or mitigation is provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-20T07:02:28.158Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e603f619fe3cd2cdd9a5d7
Added to database: 4/20/2026, 10:46:14 AM
Last enriched: 4/20/2026, 11:01:12 AM
Last updated: 4/20/2026, 12:03:18 PM
Views: 4
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