usn-8305-2
Vulnerability from osv_ubuntu
Published
2026-05-26 19:08
Modified
2026-07-06 18:13
Summary
linux-lowlatency-hwe-5.15 vulnerabilities
Details

It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431)

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: - Cryptographic API; - Ethernet bonding driver; - Packet sockets; - TLS protocol; (CVE-2026-31419, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078)


{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-31419",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31431",
              "severity": [
                {
                  "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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31504",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31533",
              "severity": [
                {
                  "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"
                }
              ]
            },
            {
              "id": "CVE-2026-43033",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43077",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43078",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.15.0-179-lowlatency",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-buildinfo-5.15.0-179-lowlatency-64k",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-5.15.0-179-lowlatency",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-headers-5.15.0-179-lowlatency",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-headers-5.15.0-179-lowlatency-64k",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-5.15.0-179-lowlatency",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-5.15.0-179-lowlatency-64k",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-lowlatency-hwe-5.15-cloud-tools-5.15.0-179",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-lowlatency-hwe-5.15-headers-5.15.0-179",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-lowlatency-hwe-5.15-tools-5.15.0-179",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-modules-5.15.0-179-lowlatency",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-modules-5.15.0-179-lowlatency-64k",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-modules-iwlwifi-5.15.0-179-lowlatency",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-tools-5.15.0-179-lowlatency",
            "binary_version": "5.15.0-179.189~20.04.1"
          },
          {
            "binary_name": "linux-tools-5.15.0-179-lowlatency-64k",
            "binary_version": "5.15.0-179.189~20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "linux-lowlatency-hwe-5.15",
        "purl": "pkg:deb/ubuntu/linux-lowlatency-hwe-5.15@5.15.0-179.189~20.04.1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.15.0-179.189~20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.0-33.34~20.04.1",
        "5.15.0-42.45~20.04.1",
        "5.15.0-43.46~20.04.1",
        "5.15.0-46.49~20.04.1",
        "5.15.0-48.54~20.04.1",
        "5.15.0-50.56~20.04.1",
        "5.15.0-52.58~20.04.1",
        "5.15.0-53.59~20.04.1",
        "5.15.0-56.62~20.04.1",
        "5.15.0-58.64~20.04.1",
        "5.15.0-60.66~20.04.1",
        "5.15.0-67.74~20.04.1",
        "5.15.0-69.76~20.04.1",
        "5.15.0-70.77~20.04.1",
        "5.15.0-71.78~20.04.1",
        "5.15.0-72.79~20.04.1",
        "5.15.0-73.80~20.04.1",
        "5.15.0-75.82~20.04.1",
        "5.15.0-76.83~20.04.1",
        "5.15.0-78.85~20.04.1",
        "5.15.0-79.88~20.04.1",
        "5.15.0-82.91~20.04.1",
        "5.15.0-83.92~20.04.1",
        "5.15.0-84.93~20.04.1",
        "5.15.0-86.95~20.04.1",
        "5.15.0-87.96~20.04.1",
        "5.15.0-88.98~20.04.1",
        "5.15.0-89.99~20.04.1",
        "5.15.0-91.101~20.04.1",
        "5.15.0-92.102~20.04.1",
        "5.15.0-94.104~20.04.1",
        "5.15.0-97.107~20.04.1",
        "5.15.0-100.110~20.04.1",
        "5.15.0-101.111~20.04.1",
        "5.15.0-102.112~20.04.1",
        "5.15.0-105.115~20.04.1",
        "5.15.0-106.116~20.04.1",
        "5.15.0-107.117~20.04.1",
        "5.15.0-110.120~20.04.1",
        "5.15.0-113.123~20.04.1",
        "5.15.0-116.126~20.04.1",
        "5.15.0-117.127~20.04.1",
        "5.15.0-118.128~20.04.1",
        "5.15.0-119.129~20.04.1",
        "5.15.0-121.131~20.04.1",
        "5.15.0-122.132~20.04.1",
        "5.15.0-124.134~20.04.1",
        "5.15.0-125.135~20.04.1",
        "5.15.0-126.136~20.04.1",
        "5.15.0-127.137~20.04.1",
        "5.15.0-128.138~20.04.1",
        "5.15.0-129.139~20.04.1",
        "5.15.0-131.141~20.04.1",
        "5.15.0-133.143~20.04.1",
        "5.15.0-134.145~20.04.1",
        "5.15.0-135.146~20.04.1",
        "5.15.0-136.147~20.04.1",
        "5.15.0-138.148~20.04.1",
        "5.15.0-139.149~20.04.1",
        "5.15.0-140.150~20.04.1",
        "5.15.0-142.152~20.04.1",
        "5.15.0-143.153~20.04.1",
        "5.15.0-144.157~20.04.1",
        "5.15.0-145.158~20.04.1",
        "5.15.0-152.162~20.04.1",
        "5.15.0-153.163~20.04.1",
        "5.15.0-156.166~20.04.1",
        "5.15.0-157.167~20.04.1",
        "5.15.0-160.170~20.04.1",
        "5.15.0-161.171~20.04.1",
        "5.15.0-163.173~20.04.1",
        "5.15.0-164.174~20.04.1",
        "5.15.0-168.178~20.04.1",
        "5.15.0-170.180~20.04.1",
        "5.15.0-171.181~20.04.1",
        "5.15.0-173.183~20.04.1",
        "5.15.0-174.184~20.04.1",
        "5.15.0-175.185~20.04.1",
        "5.15.0-177.187~20.04.1",
        "5.15.0-178.188~20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the Linux kernel algif_aead module did not properly\nhandle in-place cryptographic operations. This flaw is known as Copy Fail.\nA local attacker could use this to escalate privileges, or possibly escape\na container. (CVE-2026-31431)\n\nSeveral 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  - Cryptographic API;\n  - Ethernet bonding driver;\n  - Packet sockets;\n  - TLS protocol;\n(CVE-2026-31419, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033,\nCVE-2026-43077, CVE-2026-43078)\n",
  "id": "USN-8305-2",
  "modified": "2026-07-06T18:13:23Z",
  "published": "2026-05-26T19:08:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8305-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31419"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31431"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31504"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31533"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43033"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43077"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43078"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-lowlatency-hwe-5.15 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-31419",
    "UBUNTU-CVE-2026-31431",
    "UBUNTU-CVE-2026-31504",
    "UBUNTU-CVE-2026-31533",
    "UBUNTU-CVE-2026-43033",
    "UBUNTU-CVE-2026-43077",
    "UBUNTU-CVE-2026-43078"
  ]
}



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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

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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