QID 198438

Date Published: 2021-07-21

QID 198438: Ubuntu Security Notification for Linux kernel vulnerabilities (USN-5017-1) (Sequoia)

The virtual file system implementation in the linux kernel contained an unsigned to signed integer conversion error.
The bluetooth subsystem in the linux kernel did not properly perform access control.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

a local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (Cve-2021-33909).
An authenticated attacker could possibly use this to expose sensitive information. (Cve-2020-26558, cve-2021-0129).

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as High - 7.2 severity.
    • Solution
    Refer to Ubuntu advisory: USN-5017-1 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 198438

    CVE-2021-0129 | CVE-2021-33909 | CVE-2020-26558 |
    Software Advisories
    Advisory ID Software Component Link
    USN-5017-1 Ubuntu Linux URL Logo usn.ubuntu.com/5017-1
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