SUSE-SU-2018:3880-1

Vulnerability from csaf_suse - Published: 2018-11-23 16:09 - Updated: 2026-09-20 13:00
Summary
Security update for the Linux Kernel (Live Patch 0 for SLE 15)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel (Live Patch 0 for SLE 15)
Description of the patch: This update for the Linux Kernel 4.12.14-23 fixes several issues. The following security issues were fixed: - CVE-2018-5391: Fixed a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may have caused a denial of service condition by sending specially crafted IP fragments. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098). - CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bsc#1112039).
Patchnames: SUSE-SLE-Module-Live-Patching-15-2018-2768
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2018-18386
6.2 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2018-5391
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 2 products, the same list as for CVE-2018-18386
Threats
Impact moderate
References
To clipboard 

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        "text": "This update for the Linux Kernel 4.12.14-23 fixes several issues.\n\nThe following security issues were fixed:\n\n- CVE-2018-5391: Fixed a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may have caused a denial of service condition by sending specially crafted IP fragments. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098).\n- CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bsc#1112039).\n",
        "title": "Description of the patch"
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  "vulnerabilities": [
    {
      "cve": "CVE-2018-18386",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2018-18386"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "drivers/tty/n_tty.c in the Linux kernel before 4.14.11 allows local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.ppc64le",
          "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.x86_64"
        ]
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        }
      ],
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          "product_ids": [
            "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.x86_64"
          ]
        }
      ],
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            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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          ]
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      "title": "CVE-2018-18386"
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      ],
      "notes": [
        {
          "category": "general",
          "text": "The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size.",
          "title": "CVE description"
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        {
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          "summary": "SUSE Bug 1181460 for CVE-2018-5391",
          "url": "https://bugzilla.suse.com/1181460"
        }
      ],
      "remediations": [
        {
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          "product_ids": [
            "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-23-default-0:6-16.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2018-11-23T16:09:01Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2018-5391"
    }
  ]
}



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