USN-8851-1 (UBUNTU-CVE-2025-38724)

Vulnerability from osv_ubuntu – Published: 2026-09-30 09:53 – Updated: 2026-09-30 09:53 – Source website
VLAI
Summary
linux, linux-aws, linux-azure, linux-fips, linux-gcp, linux-gcp-5.4, linux-gcp-fips, linux-hwe-5.4, linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-xilinx-zynqmp vulnerabilities
Details

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)


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              "id": "CVE-2025-38724",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
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                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53131",
              "severity": [
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                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
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                  "type": "CVSS_V3"
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                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53131",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53221",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:FIPS-updates:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.4.0-1167-gcp-fips",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-gcp-fips-headers-5.4.0-1167",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-gcp-fips-tools-5.4.0-1167",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-headers-5.4.0-1167-gcp-fips",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-image-unsigned-5.4.0-1167-gcp-fips",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-image-unsigned-hmac-5.4.0-1167-gcp-fips",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-modules-5.4.0-1167-gcp-fips",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-modules-extra-5.4.0-1167-gcp-fips",
            "binary_version": "5.4.0-1167.176+fips1"
          },
          {
            "binary_name": "linux-tools-5.4.0-1167-gcp-fips",
            "binary_version": "5.4.0-1167.176+fips1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:20.04:LTS",
        "name": "linux-gcp-fips",
        "purl": "pkg:deb/ubuntu/linux-gcp-fips@5.4.0-1167.176+fips1?arch=source\u0026distro=fips-updates/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1167.176+fips1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1021.21+fips1",
        "5.4.0-1067.71~20.04.1",
        "5.4.0-1069.73+fips2",
        "5.4.0-1071.75+fips1",
        "5.4.0-1073.78+fips1",
        "5.4.0-1075.80+fips1",
        "5.4.0-1078.84+fips1",
        "5.4.0-1080.87+fips1",
        "5.4.0-1081.88+fips1",
        "5.4.0-1086.94+fips1",
        "5.4.0-1087.95+fips1",
        "5.4.0-1089.97+fips1",
        "5.4.0-1092.101+fips1",
        "5.4.0-1093.102+fips1",
        "5.4.0-1096.105+fips1",
        "5.4.0-1097.106+fips1",
        "5.4.0-1098.107+fips1",
        "5.4.0-1100.109+fips1",
        "5.4.0-1101.110+fips1",
        "5.4.0-1102.111+fips1",
        "5.4.0-1103.112+fips1",
        "5.4.0-1104.113+fips1",
        "5.4.0-1105.114+fips1",
        "5.4.0-1106.115+fips1",
        "5.4.0-1107.116+fips1",
        "5.4.0-1108.117+fips1",
        "5.4.0-1109.118+fips1",
        "5.4.0-1110.119+fips1",
        "5.4.0-1111.120+fips1",
        "5.4.0-1112.121+fips1",
        "5.4.0-1113.122+fips1",
        "5.4.0-1115.124+fips1",
        "5.4.0-1116.125+fips1",
        "5.4.0-1117.126+fips1",
        "5.4.0-1118.127+fips1",
        "5.4.0-1120.129+fips1",
        "5.4.0-1121.130+fips1",
        "5.4.0-1122.131+fips1",
        "5.4.0-1124.133+fips1",
        "5.4.0-1125.134+fips1",
        "5.4.0-1126.135+fips1",
        "5.4.0-1127.136+fips1",
        "5.4.0-1128.137+fips1",
        "5.4.0-1129.138+fips1",
        "5.4.0-1130.139+fips1",
        "5.4.0-1131.140+fips1",
        "5.4.0-1132.141+fips1",
        "5.4.0-1133.142+fips1",
        "5.4.0-1134.143+fips1",
        "5.4.0-1135.144+fips1",
        "5.4.0-1136.145+fips1",
        "5.4.0-1137.146+fips1",
        "5.4.0-1138.147+fips1",
        "5.4.0-1139.148+fips1",
        "5.4.0-1140.149+fips1",
        "5.4.0-1141.150+fips1",
        "5.4.0-1142.151+fips1",
        "5.4.0-1143.152+fips1",
        "5.4.0-1145.154+fips1",
        "5.4.0-1146.155+fips1",
        "5.4.0-1147.156+fips1",
        "5.4.0-1148.157+fips1",
        "5.4.0-1149.158+fips1",
        "5.4.0-1150.159+fips1",
        "5.4.0-1151.160+fips1",
        "5.4.0-1152.161+fips1",
        "5.4.0-1153.162+fips1",
        "5.4.0-1154.163+fips1",
        "5.4.0-1155.164+fips1",
        "5.4.0-1156.165+fips1",
        "5.4.0-1157.166+fips1",
        "5.4.0-1159.168+fips1",
        "5.4.0-1160.169+fips1",
        "5.4.0-1161.170+fips1",
        "5.4.0-1162.171+fips1",
        "5.4.0-1163.172+fips1",
        "5.4.0-1164.173+fips1",
        "5.4.0-1165.174+fips1",
        "5.4.0-1166.175+fips1"
      ]
    }
  ],
  "aliases": [],
  "details": "Several security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Network file system (NFS) server daemon;\n  - IPv6 networking;\n  - Netfilter;\n(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)\n",
  "id": "USN-8851-1",
  "modified": "2026-09-30T09:53:51Z",
  "published": "2026-09-30T09:53:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8851-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-38724"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53131"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53221"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, linux-azure, linux-fips, linux-gcp, linux-gcp-5.4, linux-gcp-fips, linux-hwe-5.4, linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-xilinx-zynqmp vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2025-38724",
    "UBUNTU-CVE-2026-53131",
    "UBUNTU-CVE-2026-53221"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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