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CVE-2020-27830: A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would derefere...

A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

This Linux kernel flaw can crash an affected system because kernel code uses a pointer before confirming it exists. The provided sources describe a denial-of-service style failure, not data theft or code execution. Business urgency depends on whether affected kernels or vendor builds are deployed. Exposure is most likely on systems running affected Linux kernel builds, specifically the bundle-listed kernel 5.9.14 or vendor distributions that carried the vulnerable code. Debian and NetApp advisories indicate downstream relevance, but the bundle does not define a complete affected-version range. Handle through normal kernel patch governance unless affected systems are availability-critical. There is no source-backed evidence of active exploitation, but a kernel crash can still create business disruption on production systems. Mitigation focus: Inventory Linux kernel versions across servers, appliances, and embedded systems.; Review Debian, Red Hat, NetApp, and OS vendor advisories for applicability.; Apply vendor-provided kernel or appliance security updates where affected..

Prepared

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

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-476: Exact CWE lookup

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cve · low confidence lookup

CVE-2020-27830 mapping review

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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

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/akernelkernel 5.9.14Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-476 · source CWE mapping

NULL Pointer Dereference

NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.