musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because…
Priority LOW 37CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback in network/lookup_name.c does not restrict the number of addresses, and thus an attacker can provide an unexpected number by sending A records in a reply to an AAAA query.
Why it matters now
EPSS 0.02033 81st 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-15650
- 2026-10-03 Alias added: GHSA-p2mj-x9rf-q85j
References
More musl-libc Musl vulnerabilities
- TI-2019-10919 musl libc through 1.1.23 has an x87 floating-point stack adjustment imbalance, related to… CVSS 3.1CRITICAL 9.8
- TI-2015-01634 Stack-based buffer overflow in the inet_pton function in network/inet_pton.c in musl libc… CVSS 3.0CRITICAL 9.8
- TI-2014-02811 Out-of-bounds write in musl libc CVSS 3.1CRITICAL 9.8
- TI-2025-19457 Out-of-bounds write in musl-libc musl CVSS 3.1HIGH 8.1
- TI-2020-17460 In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2017-15650 · CVE Program
- CVE-2017-15650 · NVD
- FIRST EPSS
- GHSA-p2mj-x9rf-q85j · GitHub Advisory Database · CC BY 4.0
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