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OpenAdvisories
High USN-4884-1 3 CVEs

linux-oem-5.10 vulnerabilities

Published Mar 20, 2021 · Updated Jun 3, 2026

Summary

Loris Reiff discovered that the BPF implementation in the Linux kernel did
not properly validate attributes in the getsockopt BPF hook. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2021-20194)

It was discovered that the priority inheritance futex 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-2021-3347)

It was discovered that the network block device (nbd) driver in the Linux
kernel contained a use-after-free vulnerability during device setup. A
local attacker with access to the nbd device could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2021-3348)

Fixed packages 1

ReleasePackageFixed in
Ubuntu · 20.04 LTS 20.04:LTS linux-oem-5.10 5.10.0-1017.18

Vulnerabilities 3

References

  • report
    https://ubuntu.com/security/CVE-2021-3347
  • report
    https://ubuntu.com/security/CVE-2021-3348
  • report
    https://ubuntu.com/security/CVE-2021-20194