usn-5265-1
Vulnerability from osv_ubuntu
Published
2022-02-03 05:40
Modified
2026-06-03 10:45
Summary
linux, linux-aws, linux-aws-5.11, linux-aws-5.13, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.13, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
Details

Jeremy Cline discovered a use-after-free in the nouveau graphics driver of the Linux kernel during device removal. A privileged or physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-27820)

It was discovered that the Bluetooth subsystem in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3640)

Likang Luo discovered that a race condition existed in the Bluetooth subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3752)

It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service (connection disassociation). (CVE-2021-3772)

It was discovered that the eBPF implementation in the Linux kernel contained a race condition around read-only maps. A privileged attacker could use this to modify read-only maps. (CVE-2021-4001)

It was discovered that the NFS server implementation in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4090)

Felix Wilhelm discovered that the KVM implementation in the Linux kernel did not properly handle exit events from AMD Secure Encrypted Virtualization-Encrypted State (SEV-ES) guest VMs. An attacker in a guest VM could use this to cause a denial of service (host kernel crash) or possibly execute arbitrary code in the host kernel. (CVE-2021-4093)

Lin Ma discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4202)

It was discovered that the AMD Radeon GPU driver in the Linux kernel did not properly validate writes in the debugfs file system. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42327)

Luo Likang discovered that the FireDTV Firewire driver in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42739)

References
To clipboard 

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  "aliases": [],
  "details": "Jeremy Cline discovered a use-after-free in the nouveau graphics driver of\nthe Linux kernel during device removal. A privileged or physically\nproximate attacker could use this to cause a denial of service (system\ncrash). (CVE-2020-27820)\n\nIt was discovered that the Bluetooth subsystem in the Linux kernel\ncontained a use-after-free vulnerability. A local attacker could use this\nto cause a denial of service (system crash) or possibly execute arbitrary\ncode. (CVE-2021-3640)\n\nLikang Luo discovered that a race condition existed in the Bluetooth\nsubsystem of the Linux kernel, leading to a use-after-free vulnerability. A\nlocal attacker could use this to cause a denial of service (system crash)\nor possibly execute arbitrary code. (CVE-2021-3752)\n\nIt was discovered that the SCTP protocol implementation in the Linux kernel\ndid not properly verify VTAGs in some situations. A remote attacker could\npossibly use this to cause a denial of service (connection disassociation).\n(CVE-2021-3772)\n\nIt was discovered that the eBPF implementation in the Linux kernel\ncontained a race condition around read-only maps. A privileged attacker\ncould use this to modify read-only maps. (CVE-2021-4001)\n\nIt was discovered that the NFS server implementation in the Linux kernel\ncontained an out-of-bounds write vulnerability. A local attacker could use\nthis to cause a denial of service (system crash) or possibly execute\narbitrary code. (CVE-2021-4090)\n\nFelix Wilhelm discovered that the KVM implementation in the Linux kernel\ndid not properly handle exit events from AMD Secure Encrypted\nVirtualization-Encrypted State (SEV-ES) guest VMs. An attacker in a guest\nVM could use this to cause a denial of service (host kernel crash) or\npossibly execute arbitrary code in the host kernel. (CVE-2021-4093)\n\nLin Ma discovered that the NFC Controller Interface (NCI) implementation in\nthe Linux kernel contained a race condition, leading to a use-after-free\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2021-4202)\n\nIt was discovered that the AMD Radeon GPU driver in the Linux kernel did\nnot properly validate writes in the debugfs file system. A privileged\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2021-42327)\n\nLuo Likang discovered that the FireDTV Firewire driver in the Linux kernel\ndid not properly perform bounds checking in some situations. A local\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2021-42739)\n",
  "id": "USN-5265-1",
  "modified": "2026-06-03T10:45:27Z",
  "published": "2022-02-03T05:40:51Z",
  "references": [
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      "url": "https://ubuntu.com/security/notices/USN-5265-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27820"
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      "url": "https://ubuntu.com/security/CVE-2021-3640"
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    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42327"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42739"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, linux-aws-5.11, linux-aws-5.13, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.13, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-27820",
    "UBUNTU-CVE-2021-3640",
    "UBUNTU-CVE-2021-3752",
    "UBUNTU-CVE-2021-3772",
    "UBUNTU-CVE-2021-4001",
    "UBUNTU-CVE-2021-4090",
    "UBUNTU-CVE-2021-4093",
    "UBUNTU-CVE-2021-4202",
    "UBUNTU-CVE-2021-42327",
    "UBUNTU-CVE-2021-42739"
  ]
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.