Security readout for executives and security teams
Plain-English summary
CVE-2020-35508 is a Linux kernel flaw in process and signal handling. A local attacker could bypass checks and send signals to a privileged process. The sources do not provide CVSS scoring, broad affected-version detail, or confirmed active exploitation.
Executive priority
Treat as a patch-management priority for multi-user Linux and affected vendor platforms. It is not KEV-listed, but local privilege-boundary weaknesses can matter in shared servers, appliances, and environments where attackers may first gain low-privilege access.
Technical view
The issue involves a possible race condition and incorrect process ID initialization in Linux kernel child/parent process identification while filtering signal handlers. The stated impact is local bypass of signal permission checks against privileged processes. The bundle identifies kernel 5.12 and an upstream Linux commit reference.
Likely exposure
Exposure is most relevant on Linux systems running the affected kernel lineage, especially where untrusted users can access local accounts or workloads. NetApp published an advisory, so affected appliance or storage environments should check that vendor guidance directly.
Exploitation context
The bundle supports local attacker context only. CISA KEV status is false, and no provided source confirms active exploitation. Practical risk depends on local access availability and whether signaling privileged processes can disrupt or influence sensitive operations.
Researcher notes
Evidence is limited in the bundle: no CVSS vector, no detailed affected-version range beyond kernel 5.12, and no exploit-status confirmation. Analysis should stay anchored to the CVE description, the upstream Linux commit, and vendor advisories.
Mitigation direction
- Apply vendor kernel updates that include the upstream Linux fix.
- Review Red Hat and NetApp guidance for affected products and supported update paths.
- Prioritize systems where untrusted users have local shell or workload access.
- Reduce unnecessary local account access until updates are complete.
Validation and detection
- Inventory Linux kernel versions and identify systems matching affected guidance.
- Confirm installed kernels include the upstream fix or vendor backport.
- Check Red Hat and NetApp advisories against deployed platforms.
- Review local-user exposure on multi-user hosts and shared workload systems.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-665: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-35508 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=1902724CVE reference · x_refsource_MISC
- https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948CVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210513-0006/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Initialization
Improper Initialization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.