suse-su-2023:4204-1
Vulnerability from csaf_suse
Published
2023-10-25 18:03
Modified
2023-10-25 18:03
Summary
Security update for the Linux Kernel (Live Patch 36 for SLE 12 SP5)

Notes

Title of the patch
Security update for the Linux Kernel (Live Patch 36 for SLE 12 SP5)
Description of the patch
This update for the Linux Kernel 4.12.14-122_136 fixes one issue. The following security issue was fixed: - CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215440).
Patchnames
SUSE-2023-4204,SUSE-SLE-Live-Patching-12-SP5-2023-4204
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for the Linux Kernel (Live Patch 36 for SLE 12 SP5)",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for the Linux Kernel 4.12.14-122_136 fixes one issue.\n\nThe following security issue was fixed:\n\n- CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215440).\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-2023-4204,SUSE-SLE-Live-Patching-12-SP5-2023-4204",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2023_4204-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2023:4204-1",
        "url": "https://www.suse.com/support/update/announcement/2023/suse-su-20234204-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2023:4204-1",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-October/016844.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1215440",
        "url": "https://bugzilla.suse.com/1215440"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2023-4623 page",
        "url": "https://www.suse.com/security/cve/CVE-2023-4623/"
      }
    ],
    "title": "Security update for the Linux Kernel (Live Patch 36 for SLE 12 SP5)",
    "tracking": {
      "current_release_date": "2023-10-25T18:03:46Z",
      "generator": {
        "date": "2023-10-25T18:03:46Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2023:4204-1",
      "initial_release_date": "2023-10-25T18:03:46Z",
      "revision_history": [
        {
          "date": "2023-10-25T18:03:46Z",
          "number": "1",
          "summary": "Current version"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le",
                "product": {
                  "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le",
                  "product_id": "kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le"
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64le"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.s390x",
                "product": {
                  "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.s390x",
                  "product_id": "kgraft-patch-4_12_14-122_136-default-12-2.3.s390x"
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64",
                "product": {
                  "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64",
                  "product_id": "kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64"
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "SUSE Linux Enterprise Live Patching 12 SP5",
                "product": {
                  "name": "SUSE Linux Enterprise Live Patching 12 SP5",
                  "product_id": "SUSE Linux Enterprise Live Patching 12 SP5",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sle-live-patching:12:sp5"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le as component of SUSE Linux Enterprise Live Patching 12 SP5",
          "product_id": "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le"
        },
        "product_reference": "kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le",
        "relates_to_product_reference": "SUSE Linux Enterprise Live Patching 12 SP5"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.s390x as component of SUSE Linux Enterprise Live Patching 12 SP5",
          "product_id": "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.s390x"
        },
        "product_reference": "kgraft-patch-4_12_14-122_136-default-12-2.3.s390x",
        "relates_to_product_reference": "SUSE Linux Enterprise Live Patching 12 SP5"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64 as component of SUSE Linux Enterprise Live Patching 12 SP5",
          "product_id": "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64"
        },
        "product_reference": "kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64",
        "relates_to_product_reference": "SUSE Linux Enterprise Live Patching 12 SP5"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-4623",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-4623"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A use-after-free vulnerability in the Linux kernel\u0027s net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.\n\nIf a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.\n\nWe recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le",
          "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.s390x",
          "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-4623",
          "url": "https://www.suse.com/security/cve/CVE-2023-4623"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1215115 for CVE-2023-4623",
          "url": "https://bugzilla.suse.com/1215115"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1215440 for CVE-2023-4623",
          "url": "https://bugzilla.suse.com/1215440"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1217444 for CVE-2023-4623",
          "url": "https://bugzilla.suse.com/1217444"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1217531 for CVE-2023-4623",
          "url": "https://bugzilla.suse.com/1217531"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1219698 for CVE-2023-4623",
          "url": "https://bugzilla.suse.com/1219698"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1221578 for CVE-2023-4623",
          "url": "https://bugzilla.suse.com/1221578"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1221598 for CVE-2023-4623",
          "url": "https://bugzilla.suse.com/1221598"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le",
            "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.s390x",
            "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.ppc64le",
            "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.s390x",
            "SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_136-default-12-2.3.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2023-10-25T18:03:46Z",
          "details": "important"
        }
      ],
      "title": "CVE-2023-4623"
    }
  ]
}


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