SUSE-SU-2021:2027-1

Vulnerability from csaf_suse - Published: 2021-06-18 09:40 - Updated: 2026-09-20 13:59
Summary
Security update for the Linux Kernel (Live Patch 13 for SLE 15 SP2)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel (Live Patch 13 for SLE 15 SP2)
Description of the patch: This update for the Linux Kernel 5.3.18-24_64 fixes several issues. The following issues were fixed: - CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic operations by the BPF verifier could be abused to perform out-of-bounds reads and writes in kernel memory (bsc#1186484). - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values (bsc#1186111). - CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed local attackers to elevate their privileges (bnc#1186060). - Fixed a data loss/data corruption that occurs if there is a write error on an md/raid array (bsc#1185680).
Patchnames: SUSE-2021-2027,SUSE-SLE-Module-Live-Patching-15-SP2-2021-2027
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-2021-23134
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-0:2-2.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-0:2-2.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-0:2-2.1.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2021-33034
7.7 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2021-23134
Threats
Impact important
CVE-2021-33200
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2021-23134
Threats
Impact important
References
To clipboard 

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      "notes": [
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          "text": "Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.",
          "title": "CVE description"
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          "text": "https://www.suse.com/security/cve/CVE-2021-33034"
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          "text": "In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.",
          "title": "CVE description"
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            "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-0:2-2.1.x86_64"
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            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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            "SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-0:2-2.1.x86_64"
          ]
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      "threats": [
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          "category": "impact",
          "date": "2021-06-18T09:40:50Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-33200"
    }
  ]
}



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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

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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.
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  • 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.


Detection rules are retrieved from Rulezet.


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