MEDIUM 6.0 Microsoft
CVE-2020-27171
An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory aka CID-10d2bb2e6b1d.
Microsoft Security Update 2021-Mar: An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory aka CID-10d2bb2e6b1d.
Affected Products
- cm1 kernel 5.10.60.1-1 on CBL Mariner 1.0
- cbl2 kernel 5.10.78.1-1 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-27171
- https://nvd.nist.gov/vuln/detail/CVE-2020-27171
This medium severity vulnerability with a CVSS score of 6.0 was published on 2021-03-09 via Microsoft. Affected: cm1 kernel 5.10.60.1-1 on CBL Mariner 1.0, cbl2 kernel 5.10.78.1-1 on CBL Mariner 2.0.
vulnfeed aggregates 11644 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.