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CVE-2026-74221 affecting package qemu 10.1.0-1

Type: advisorySources: OSV

U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_readlink_reply() function in net/nfs-common.c when processing NFS server responses. A malicious NFS server can send crafted READLINK replies with negative or oversized symlink length values to corrupt memory and crash the bootloader.

Products
qemu
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-74221
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 14:04 UTC · Revision 1

Source evidence

CVE-2026-74221 affecting package qemu 10.1.0-1

core-osv · Original source

Published 29 Sept 2026, 22:18 UTC

U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_readlink_reply() function in net/nfs-common.c when processing NFS server responses. A malicious NFS server can send crafted READLINK replies with negative or oversized symlink length values to corrupt memory and crash the bootloader.

osv:AZL-105702

qemu

Fixed versions: Not specified

Complete source record
{
  "id": "c78909d19c662f9d7a92ea8b56b9a325fa00e1d93bb5867b2f8320a0f240e84c",
  "url": "https://osv.dev/vulnerability/AZL-105702",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-74221 affecting package qemu 10.1.0-1",
    "summary": "U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_readlink_reply() function in net/nfs-common.c when processing NFS server responses. A malicious NFS server can send crafted READLINK replies with negative or oversized symlink length values to corrupt memory and crash the bootloader.",
    "evidence": "osv:AZL-105702",
    "products": [
      {
        "name": {
          "value": "qemu",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "AZL-105702",
      "aliases": [
        "AZL-105702"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "10.1.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "qemu",
            "purl": "pkg:rpm/azure-linux/qemu",
            "ecosystem": "Azure Linux:3"
          },
          "database_specific": {
            "source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-105702.json"
          }
        }
      ],
      "modified": "2026-10-15T05:37:09Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-74221"
      ],
      "references": [
        "https://nvd.nist.gov/vuln/detail/CVE-2026-74221"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-74221",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 321357,
  "published_at": "2026-09-29T22:18:33+00:00"
}