Log in Start free

Vulnerability · Published Oct 7, 2026 · Assigned by redhat

CVE-2026-107169M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8

Medium 6.2

In plain English

A medium-severity null pointer dereference in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.1%top 98.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 during text processing. This issue causes the application to crash unexpectedly, resulting in a Denial of Service (DoS).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12m17n-libno fix listedDEBIAN-CVE-2026-107169
Debian:13m17n-libno fix listedDEBIAN-CVE-2026-107169
Debian:14m17n-libno fix listedDEBIAN-CVE-2026-107169
Ubuntu:22.04:LTSm17n-libno fix listedUBUNTU-CVE-2026-107169
Ubuntu:24.04:LTSm17n-libno fix listedUBUNTU-CVE-2026-107169
Ubuntu:26.04:LTSm17n-libno fix listedUBUNTU-CVE-2026-107169
Ubuntu:26.10m17n-libno fix listedUBUNTU-CVE-2026-107169

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References