The wmem_block_split_free_chunk function in epan/wmem/wmem_allocator_block.c in the wmem…
Priority LOW 25CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The wmem_block_split_free_chunk function in epan/wmem/wmem_allocator_block.c in the wmem block allocator in the memory manager in Wireshark 1.12.x before 1.12.7 does not properly consider a certain case of multiple realloc operations that restore a memory chunk to its original size, which allows remote attackers to cause a denial of service (incorrect free operation and application crash) via a crafted packet.
Why it matters now
EPSS 0.02814 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:* | 11.3 | Vulnerable | Oracle |
| cpe:2.3:a:wireshark:wireshark:1.12.0:*:*:*:*:*:*:* | 1.12.0 | Vulnerable | Wireshark Foundation |
| cpe:2.3:a:wireshark:wireshark:1.12.1:*:*:*:*:*:*:* | 1.12.1 | Vulnerable | Wireshark Foundation |
| cpe:2.3:a:wireshark:wireshark:1.12.2:*:*:*:*:*:*:* | 1.12.2 | Vulnerable | Wireshark Foundation |
| cpe:2.3:a:wireshark:wireshark:1.12.3:*:*:*:*:*:*:* | 1.12.3 | Vulnerable | Wireshark Foundation |
| cpe:2.3:a:wireshark:wireshark:1.12.4:*:*:*:*:*:*:* | 1.12.4 | Vulnerable | Wireshark Foundation |
| cpe:2.3:a:wireshark:wireshark:1.12.5:*:*:*:*:*:*:* | 1.12.5 | Vulnerable | Wireshark Foundation |
| cpe:2.3:a:wireshark:wireshark:1.12.6:*:*:*:*:*:*:* | 1.12.6 | Vulnerable | Wireshark Foundation |
- cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:* Versions 11.3 Vulnerable ·Oracle
- cpe:2.3:a:wireshark:wireshark:1.12.0:*:*:*:*:*:*:* Versions 1.12.0 Vulnerable ·Wireshark Foundation
- cpe:2.3:a:wireshark:wireshark:1.12.1:*:*:*:*:*:*:* Versions 1.12.1 Vulnerable ·Wireshark Foundation
- cpe:2.3:a:wireshark:wireshark:1.12.2:*:*:*:*:*:*:* Versions 1.12.2 Vulnerable ·Wireshark Foundation
- cpe:2.3:a:wireshark:wireshark:1.12.3:*:*:*:*:*:*:* Versions 1.12.3 Vulnerable ·Wireshark Foundation
- cpe:2.3:a:wireshark:wireshark:1.12.4:*:*:*:*:*:*:* Versions 1.12.4 Vulnerable ·Wireshark Foundation
- cpe:2.3:a:wireshark:wireshark:1.12.5:*:*:*:*:*:*:* Versions 1.12.5 Vulnerable ·Wireshark Foundation
- cpe:2.3:a:wireshark:wireshark:1.12.6:*:*:*:*:*:*:* Versions 1.12.6 Vulnerable ·Wireshark Foundation
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 3 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2015-6242
- 2026-10-03 Alias added: GHSA-cxr5-cqh9-cwrf
References
Advisory 6
Sources
- CVE-2015-6242 · CVE Program
- CVE-2015-6242 · NVD
- FIRST EPSS
- GHSA-cxr5-cqh9-cwrf · GitHub Advisory Database · CC BY 4.0
- CVE-2015-6242 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences