CVE-2026-107167
M17n-lib: heap use-after-free write in re_init_ic()
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.
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
6.2
M17n-lib: heap use-after-free write in re_init_ic()
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.
- Record
CVE-2026-107167- 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-416
- Updated
- 2026-11-05
EUVDEUVD-2026-94365
6.2
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.
- Record
EUVD-2026-94365- 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-3wc7-m5vh-qr2g
6.2
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap...
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.
- Record
GHSA-3wc7-m5vh-qr2g- 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-416
- Updated
- 2026-11-02
NVD
6.2
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.
- Record
CVE-2026-107167- 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-416
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-107167
6.2
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.
- Record
DEBIAN-CVE-2026-107167- 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-2026-107167
6.2
A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.
- Record
UBUNTU-CVE-2026-107167- 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-2026-107167 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 0.12%, the 1st percentile. No source names a fixed version.