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CVE Record

CVE-2020-27170: An issue was discovered in the Linux kernel before 5.11.8.

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable 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-f232326f6966. This affects pointer types that do not define a ptr_limit.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2020-27170 is a Linux kernel flaw that can let a local unprivileged user infer sensitive kernel memory despite Spectre protections. The business risk is highest on shared Linux systems, developer boxes, container hosts, and servers where untrusted users or workloads can run code. Linux systems running kernels before 5.11.8, or unpatched vendor backports, are potentially exposed. Practical priority depends on whether local unprivileged users, tenants, containers, or workloads can execute code on the host. Treat this as a high-priority kernel update for shared or multi-tenant Linux environments. It is mainly an information disclosure risk, but kernel memory exposure can weaken broader security boundaries. Mitigation focus: Update to Linux 5.11.8 or a vendor kernel containing the referenced fix.; Apply applicable Fedora, Debian, or distribution security updates for affected kernels.; Prioritize shared systems, container hosts, and machines with untrusted local code execution..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
0Timeline events
0ADP providers
8Source links

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

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