SUSE-SU-2021:2584-1

Vulnerability from csaf_suse - Published: 2021-08-02 07:44 - Updated: 2026-09-20 14:02
Summary
Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP1)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP1)
Description of the patch: This update for the Linux Kernel 4.12.14-197_72 fixes several issues. The following security issues were fixed: - CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to andobtain full root privileges. (bsc#1188062) - CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116) - CVE-2020-36385: Fixed a use-after-free vulnerability reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called. (bnc#1187050)
Patchnames: SUSE-2021-2584,SUSE-SLE-Live-Patching-12-SP4-2021-2584,SUSE-SLE-Module-Live-Patching-15-SP1-2021-2585
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-2020-36385
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2021-22555
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 5 products, the same list as for CVE-2020-36385
Threats
Impact important
CVE-2021-33909
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 5 products, the same list as for CVE-2020-36385
Threats
Impact important
References
To clipboard 

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          "products": [
            "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.s390x",
            "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.x86_64",
            "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-08-02T07:44:17Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-22555"
    },
    {
      "cve": "CVE-2021-33909",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-33909"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.ppc64le",
          "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.s390x",
          "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.x86_64",
          "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.ppc64le",
          "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2021-33909",
          "url": "https://www.suse.com/security/cve/CVE-2021-33909"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1188062 for CVE-2021-33909",
          "url": "https://bugzilla.suse.com/1188062"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1188063 for CVE-2021-33909",
          "url": "https://bugzilla.suse.com/1188063"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1188257 for CVE-2021-33909",
          "url": "https://bugzilla.suse.com/1188257"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1189302 for CVE-2021-33909",
          "url": "https://bugzilla.suse.com/1189302"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1190859 for CVE-2021-33909",
          "url": "https://bugzilla.suse.com/1190859"
        }
      ],
      "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 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.s390x",
            "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.x86_64",
            "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.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 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.s390x",
            "SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_68-default-0:8-2.2.x86_64",
            "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_72-default-0:9-2.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-08-02T07:44:17Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-33909"
    }
  ]
}



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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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



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.