Security readout for executives and security teams
CVE-2020-25671 is a Linux kernel flaw in NFC socket handling. A reference-count leak in llcp_sock_connect() can cause a use-after-free condition, which the CVE source says might lead to privilege escalation. Business urgency depends on whether affected Linux kernels are present and whether vendor kernel updates have been applied. Exposure is most likely on Linux systems running affected kernel builds before vendor updates. The provided affected data says Linux Kernel “All,” but exact version boundaries are not included. Fedora, Debian LTS, and NetApp advisories indicate distribution and appliance relevance. Treat this as a high-priority kernel maintenance issue where affected Linux systems exist. No active exploitation is evidenced here, but kernel privilege-escalation flaws can materially increase attacker impact after initial access. Mitigation focus: Apply Linux kernel security updates from the system vendor or distribution.; Review Fedora, Debian LTS, and NetApp advisories where applicable.; Prioritize internet-facing, multi-user, and high-value Linux systems for update verification..
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
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CWE-416: Exact CWE lookup
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Open ATT&CK lookupCVE-2020-25671 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
- FEDORA-2021-1c170a7c7cCVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-21360476b6CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-d56567bdabCVE reference · vendor-advisory, x_refsource_FEDORA
- https://www.openwall.com/lists/oss-security/2020/11/01/1CVE reference · x_refsource_MISC
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security updateCVE reference · mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security updateCVE reference · mailing-list, x_refsource_MLIST
- https://security.netapp.com/advisory/ntap-20210702-0008/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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.