glibc security update

{
  "id": "5ab3df890647634cf34222446a5736d2cee0813d3a7b130e798718b57fb605c6",
  "url": "https://osv.dev/vulnerability/OESA-2026-4281",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "glibc security update",
    "summary": "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): The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted DNS server for name resolution, with the compromised DNS server being capable of processing records large enough to result in a stack overflow in an nscd thread stack. During experimentation, bind 9 was unable to handle large records, but that could change in future or with a different name server. In typical installations, nscd is executed in an isolated context as its own user without a shell, due to which any compromise of that service is isolated. There is a remote possibility of nscd cache corruption if an attacker manages to get the stack pointer into a desired point in the heap, potentially resulting in other caches in nscd being overwritten with corrupt data through the stack overflow, until the buggy code path eventually results in a crash. Finally, a cr",
    "evidence": "osv:OESA-2026-4281",
    "products": [
      {
        "name": {
          "value": "glibc",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.38-130.oe2403sp1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "OESA-2026-4281",
      "aliases": [
        "OESA-2026-4281"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.38-130.oe2403sp1"
                }
              ]
            }
          ],
          "package": {
            "name": "glibc",
            "purl": "pkg:rpm/openEuler/glibc&distro=openEuler-24.03-LTS-SP1",
            "ecosystem": "openEuler:24.03-LTS-SP1"
          },
          "database_specific": {
            "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4281.json"
          },
          "ecosystem_specific": {
            "src": [
              "glibc-2.38-130.oe2403sp1.src.rpm"
            ],
            "noarch": [
              "glibc-help-2.38-130.oe2403sp1.noarch.rpm"
            ],
            "x86_64": [
              "glibc-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-all-langpacks-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-common-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-debuginfo-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-debugsource-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-debugutils-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-devel-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-locale-archive-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-locale-source-2.38-130.oe2403sp1.x86_64.rpm",
              "glibc-nss-devel-2.38-130.oe2403sp1.x86_64.rpm",
              "libnsl-2.38-130.oe2403sp1.x86_64.rpm",
              "nscd-2.38-130.oe2403sp1.x86_64.rpm",
              "nss_modules-2.38-130.oe2403sp1.x86_64.rpm"
            ],
            "aarch64": [
              "glibc-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-all-langpacks-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-common-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-debuginfo-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-debugsource-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-debugutils-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-devel-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-locale-archive-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-locale-source-2.38-130.oe2403sp1.aarch64.rpm",
              "glibc-nss-devel-2.38-130.oe2403sp1.aarch64.rpm",
              "libnsl-2.38-130.oe2403sp1.aarch64.rpm",
              "nscd-2.38-130.oe2403sp1.aarch64.rpm",
              "nss_modules-2.38-130.oe2403sp1.aarch64.rpm"
            ]
          }
        }
      ],
      "modified": "2026-10-16T12:15:08.080597886Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-89092"
      ],
      "references": [
        "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4281",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89092"
      ],
      "provider_metadata": {
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89092",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 340785,
  "published_at": "2026-10-16T11:58:54+00:00"
}