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Rewterz Threat Advisory – CVE-2021-3739 – Linux Kernel Vulnerability

Severity

Medium

Analysis Summary

CVE-2021-3739

Linux Kernel is vulnerable to a denial of service, caused by a NULL pointer dereference flaw in the btrfs_rm_device function in fs/btrfs/volumes.c. By sending a specially crafted request, a local attacker could exploit this vulnerability to cause a denial of service condition.

Impact

  • Denial of Services

Affected Vendors

Linux

Affected Products

  • Linux Kernel 5.14-rc4

Remediation

Refer to Linux Kernel Web site for patch, upgrade, or suggested workaround information.

https://lore.kernel.org/linux-btrfs/20210806102415.304717-1/