OESA-2026-1805

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1805
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-1805.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-1805
Upstream
Published
2026-04-03T11:10:49Z
Modified
2026-08-18T01:19:45.832253474Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
glibc security update
Details

The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more.

Security Fix(es):

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.(CVE-2026-4437)

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 result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.(CVE-2026-4438)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:24.03-LTS-SP3 / glibc

Package

Name
glibc
Purl
pkg:rpm/openEuler/glibc&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.38-98.oe2403sp3

Ecosystem specific 

{
    "aarch64": [
        "glibc-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-all-langpacks-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-common-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-debuginfo-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-debugsource-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-debugutils-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-devel-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-locale-archive-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-locale-source-2.38-98.oe2403sp3.aarch64.rpm",
        "glibc-nss-devel-2.38-98.oe2403sp3.aarch64.rpm",
        "libnsl-2.38-98.oe2403sp3.aarch64.rpm",
        "nscd-2.38-98.oe2403sp3.aarch64.rpm",
        "nss_modules-2.38-98.oe2403sp3.aarch64.rpm"
    ],
    "noarch": [
        "glibc-help-2.38-98.oe2403sp3.noarch.rpm"
    ],
    "src": [
        "glibc-2.38-98.oe2403sp3.src.rpm"
    ],
    "x86_64": [
        "glibc-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-all-langpacks-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-common-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-debuginfo-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-debugsource-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-debugutils-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-devel-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-locale-archive-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-locale-source-2.38-98.oe2403sp3.x86_64.rpm",
        "glibc-nss-devel-2.38-98.oe2403sp3.x86_64.rpm",
        "libnsl-2.38-98.oe2403sp3.x86_64.rpm",
        "nscd-2.38-98.oe2403sp3.x86_64.rpm",
        "nss_modules-2.38-98.oe2403sp3.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1805.json"