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CVE-2026-4437 gethostbyaddr and gethostbyaddr_r may incorrectly handle DNS response

🗓️ 20 Mar 2026 19:59:00Reported by glibcType 
cvelist
 cvelist
🔗 www.cve.org👁 23 Views

CVE-2026-4437: gethostbyaddr may misinterpret crafted DNS responses as valid answers in GNU C Library 2.34–2.43.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-4437
20 Mar 202619:59
attackerkb
CBLMariner
CVE-2026-4437 affecting package glibc for versions less than 2.38-19
6 Apr 202623:43
cbl_mariner
Chainguard
CVE-2026-4437 vulnerabilities
2 Apr 202619:17
cgr
Circl
CVE-2026-4437
20 Mar 202619:16
circl
CNNVD
GNU C Library 安全漏洞
20 Mar 202600:00
cnnvd
CVE
CVE-2026-4437
20 Mar 202619:59
cve
Debian CVE
CVE-2026-4437
20 Mar 202619:59
debiancve
EUVD
EUVD-2026-13796
20 Mar 202621:31
euvd
Tenable Nessus
MiracleLinux 8 : glibc-2.28-251.el8_10.37 (AXSA:2026-726:04)
28 May 202600:00
nessus
Tenable Nessus
Oracle Linux 8 : glibc (ELSA-2026-20587)
27 May 202600:00
nessus
Rows per page
[
  {
    "vendor": "The GNU C Library",
    "product": "glibc",
    "versions": [
      {
        "status": "affected",
        "version": "2.34",
        "lessThanOrEqual": "2.43",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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