Security readout for executives and security teams
Plain-English summary
Ubuntu's earlier fix for an Intel graphics information leak was incomplete. On affected Ubuntu 18.04 systems, a user could potentially expose sensitive data through the kernel graphics driver. This is not a remote takeover issue, but it matters on shared desktops, workstations, or multi-user Linux environments.
Executive priority
Treat as a scheduled patching priority, elevated for shared Linux workstations or environments handling sensitive data. It has confidentiality impact but no cited remote execution, integrity, availability, or active exploitation evidence.
Technical view
CVE-2020-8832 affects Ubuntu 18.04 LTS 4.15.x kernels before 4.15.0-91.92. The i915 fix for CVE-2019-14615 did not fully clear data structures across context switches on certain Intel graphics processors, causing sensitive information exposure. CVSS 3.1 is 5.5 with high confidentiality impact.
Likely exposure
Exposure is most likely on Ubuntu 18.04 LTS systems using vulnerable 4.15.x kernels with Intel graphics hardware and the i915 driver. The provided bundle does not identify broader affected Ubuntu releases or specific NetApp products.
Exploitation context
The CVSS vector is local, low complexity, no privileges required, and user interaction required. The bundle marks KEV as false and provides no evidence of active exploitation, so active exploitation should not be assumed.
Researcher notes
This is an incomplete-fix issue tied to CVE-2019-14615. Focus validation on Ubuntu 18.04 bionic kernel provenance, active kernel version, and Intel i915 exposure. Do not generalize impact beyond the products named in the provided sources.
Mitigation direction
- Upgrade Ubuntu 18.04 LTS systems to kernel 4.15.0-91.92 or later per USN-4302-1.
- Prioritize shared systems, workstations, and hosts with Intel graphics or i915 exposure.
- Reboot into the patched kernel after updating.
- Remove older vulnerable kernels where operationally safe.
- Review NetApp guidance if NetApp products are present.
Validation and detection
- Inventory Ubuntu 18.04 LTS hosts and record running kernel versions.
- Confirm no affected host runs a 4.15.x kernel earlier than 4.15.0-91.92.
- Identify systems with Intel graphics processors or i915 driver use.
- Verify reboot completed into the patched kernel.
- Document any NetApp advisory applicability separately.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2020-8832 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1862840CVE reference · x_refsource_MISC
- USN-4302-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- https://security.netapp.com/advisory/ntap-20200430-0004/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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.