Heap Use-After-Free Vulnerability in m17n-lib Affects Users
CVE-2026-107167

6.2MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
7 October 2026

What is CVE-2026-107167?

A vulnerability exists in the m17n-lib library that allows a user to provide specially crafted text input, triggering a heap use-after-free condition during input-method state transitions. This flaw occurs when the library improperly manages memory, freeing an internal input context object but still attempting to access the freed memory. As a result, applications that utilize m17n-lib may experience crashes, leading to Denial of Service (DoS) incidents or posing a risk for arbitrary code execution under specific conditions.

References

https://access.redhat.com/security/cve/CVE-2026-107167
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2547408
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.2
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Shalitha Madhuwantha for reporting this issue.
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