CVE-2026-107169
M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8
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).
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8
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).
- Record
CVE-2026-107169- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-476
- Updated
- 2026-11-05
EUVDEUVD-2026-94366
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).
- Record
EUVD-2026-94366- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-05
GitHub AdvisoriesGHSA-pjw2-cc43-prpf
A flaw was found in m17n-lib. An attacker could provide specially crafted or truncated UTF-8...
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).
- Record
GHSA-pjw2-cc43-prpf- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-476
- Updated
- 2026-11-02
NVD
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).
- Record
CVE-2026-107169- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-476
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-107169
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).
- Record
DEBIAN-CVE-2026-107169- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-06
OSVUBUNTU-CVE-2026-107169
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).
- Record
UBUNTU-CVE-2026-107169- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
m17n-libDebian:12 |
All versions, plus listed versions 1.8.0-61.8.2-11.8.3-11.8.3-21.8.4-1 Show 4 moreShow less1.8.4-21.8.5-11.8.6-11.8.7-1 |
None known |
m17n-libDebian:13 |
All versions, plus listed versions 1.8.5-11.8.6-11.8.7-1 |
None known |
m17n-libDebian:14 |
All versions, plus listed versions 1.8.5-11.8.6-11.8.7-1 |
None known |
m17n-libUbuntu:16.04:LTS |
All versions, plus listed versions 1.6.4-31.7.0-11.7.0-21.7.0-3 |
None known |
m17n-libUbuntu:18.04:LTS |
All versions, plus listed versions 1.7.0-31.7.0-3build1 |
None known |
m17n-libUbuntu:20.04:LTS |
All versions, plus listed versions 1.8.0-2 |
None known |
m17n-libUbuntu:22.04:LTS |
All versions, plus listed versions 1.8.0-2build11.8.0-31.8.0-3build11.8.0-3.11.8.0-4 |
None known |
m17n-libUbuntu:24.04:LTS |
All versions, plus listed versions 1.8.4-11.8.4-1build11.8.4-1build2 |
None known |
m17n-libUbuntu:26.10 |
All versions, plus listed versions 1.8.6-1 |
None known |
m17n-libUbuntu:26.04:LTS |
All versions, plus listed versions 1.8.5-1build11.8.6-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | EUVD, NVD, OSV | |
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-107169 is a medium vulnerability (CVSS 6.2) in Red Hat Enterprise Linux 10, published October 7, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. No source names a fixed version.