A flaw was found in m17n-lib. An attacker could provide specially crafted or truncated UTF-8 input to trigger an unhandled null pointer dereference… (CVE-2026-107169)
Description
A vulnerability in m17n-lib allows an attacker to cause a denial of service by providing specially crafted or truncated UTF-8 input that triggers an unhandled null pointer dereference. This results in an unexpected application crash. The issue affects multiple specific versions of m17n-lib and has a medium severity rating.
CVSS v3.1
Score 6.2medium
Affected software
pkg:deb/ubuntu/m17n-lib?arch=source&distro=xenialpkg:deb/ubuntu/m17n-lib?arch=source&distro=bionicpkg:deb/ubuntu/m17n-lib?arch=source&distro=focalpkg:deb/ubuntu/m17n-lib?arch=source&distro=jammypkg:deb/ubuntu/m17n-lib?arch=source&distro=noblepkg:deb/ubuntu/m17n-lib?arch=source&distro=stonkingpkg:deb/ubuntu/m17n-lib?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-107169 is a denial of service vulnerability in m17n-lib caused by improper handling of specially crafted or truncated UTF-8 input. The flaw leads to an unhandled null pointer dereference during text processing, causing the application to crash unexpectedly. This vulnerability affects specific versions of m17n-lib, as enumerated in the affectedVersions list. The CVSS 3.1 base score is 6.2, reflecting a medium severity with local attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
Successful exploitation results in a denial of service condition due to application crashes triggered by unhandled null pointer dereferences. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, avoid processing untrusted UTF-8 input with affected versions of m17n-lib to mitigate risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-107169
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f4e12cdf04f656656d1b
Added to database: 10/17/2026, 22:21:21 UTC
Last enriched: 10/17/2026, 22:35:12 UTC
Last updated: 10/17/2026, 22:35:12 UTC
Views: 2
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