CVEvulnerability

CVE-2026-4437

7.5 HIGH Published 2026-03-20 Modified 2026-07-14 Official page ↗
Status
Modified
Published
2026-03-20
Last modified
2026-07-14
Assigner
3ff69d7a-14f2-4f67-a097-88dee7810d18
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-125

Description

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

Affected configurations

• gnu glibc (>= 2.34 <= 2.43)

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References