Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-15436
• https://lkml.org/lkml/2020/6/7/379
• https://security.netapp.com/advisory/ntap-20201218-0002/