suse-su-2021:2384-1
Vulnerability from csaf_suse
Published
2021-07-16 07:56
Modified
2021-07-16 07:56
Summary
Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

Notes

Title of the patch
Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)
Description of the patch
This update for the Linux Kernel 5.3.18-57 fixes one issue. The following security issue was fixed: - CVE-2021-23133: Fixed a race condition in the SCTP sockets that can lead to kernel privilege escalation from the context of a network service or an unprivileged process. (bsc#1185901)
Patchnames
SUSE-2021-2384,SUSE-SLE-Module-Live-Patching-15-SP2-2021-2378,SUSE-SLE-Module-Live-Patching-15-SP3-2021-2384
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": {
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      "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": [
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        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for the Linux Kernel 5.3.18-57 fixes one issue.\n\nThe following security issue was fixed:\n\n- CVE-2021-23133: Fixed a race condition in the SCTP sockets that can lead to kernel privilege escalation from the context of a network service or an unprivileged process. (bsc#1185901)\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-2021-2384,SUSE-SLE-Module-Live-Patching-15-SP2-2021-2378,SUSE-SLE-Module-Live-Patching-15-SP3-2021-2384",
        "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": [
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        "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-2021_2384-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2021:2384-1",
        "url": "https://www.suse.com/support/update/announcement/2021/suse-su-20212384-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2021:2384-1",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009154.html"
      },
      {
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        "url": "https://bugzilla.suse.com/1185901"
      },
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        "category": "self",
        "summary": "SUSE CVE CVE-2021-23133 page",
        "url": "https://www.suse.com/security/cve/CVE-2021-23133/"
      }
    ],
    "title": "Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)",
    "tracking": {
      "current_release_date": "2021-07-16T07:56:20Z",
      "generator": {
        "date": "2021-07-16T07:56:20Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2021:2384-1",
      "initial_release_date": "2021-07-16T07:56:20Z",
      "revision_history": [
        {
          "date": "2021-07-16T07:56:20Z",
          "number": "1",
          "summary": "Current version"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
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        "branches": [
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                  "product_id": "kernel-livepatch-5_3_18-57-preempt-3-3.1.x86_64"
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            "name": "x86_64"
          },
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                "product": {
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                  "product_id": "SUSE Linux Enterprise Live Patching 15 SP2",
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                    "cpe": "cpe:/o:suse:sle-module-live-patching:15:sp2"
                  }
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              },
              {
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                "product": {
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                  }
                }
              }
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        "category": "vendor",
        "name": "SUSE"
      }
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        },
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        },
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      },
      {
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          "product_id": "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.ppc64le"
        },
        "product_reference": "kernel-livepatch-5_3_18-57-default-3-3.1.ppc64le",
        "relates_to_product_reference": "SUSE Linux Enterprise Live Patching 15 SP3"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "kernel-livepatch-5_3_18-57-default-3-3.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP3",
          "product_id": "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.s390x"
        },
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        "relates_to_product_reference": "SUSE Linux Enterprise Live Patching 15 SP3"
      },
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        },
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        "relates_to_product_reference": "SUSE Linux Enterprise Live Patching 15 SP3"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-23133",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-23133"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)-\u003esctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1.s390x",
          "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1.x86_64",
          "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.ppc64le",
          "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.s390x",
          "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.x86_64"
        ]
      },
      "references": [
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          "category": "external",
          "summary": "CVE-2021-23133",
          "url": "https://www.suse.com/security/cve/CVE-2021-23133"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1184675 for CVE-2021-23133",
          "url": "https://bugzilla.suse.com/1184675"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1185901 for CVE-2021-23133",
          "url": "https://bugzilla.suse.com/1185901"
        }
      ],
      "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 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1.x86_64",
            "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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            "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1.x86_64",
            "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-07-16T07:56:20Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-23133"
    }
  ]
}


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  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
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