Security readout for executives and security teams
Plain-English summary
A flaw in Linux’s Intel i915 graphics driver can leave hardware-monitoring data accessible after related memory is freed during device removal. A local, low-privileged user could potentially exploit this use-after-free to crash the system or compromise confidentiality and integrity. The supplied CVSS score is 7.8.
Executive priority
Treat as a high-priority local privilege boundary risk on affected multi-user systems using Intel i915 graphics. It is less urgent for isolated systems without untrusted local users, but remediation should follow the normal high-severity kernel update cycle. No supplied evidence supports emergency action for active exploitation.
Technical view
During i915 device unbind, separate cleanup paths may release hwmon driver data before unregistering hwmon. Access to the remaining hwmon sysfs interface can then dereference freed memory. The cited kernel changes replace device-managed cleanup with explicit release ordering. The supplied CWE-400 classification does not align clearly with the described use-after-free behavior.
Likely exposure
Exposure is limited to Linux systems using the Intel i915 driver and affected kernel builds. Exploitation requires local access with low privileges, no user interaction, and access during the device-unbind cleanup window. The bundle names versions 6.2, 6.6.34, 6.9.5, and 6.10, but does not provide unambiguous affected ranges.
Exploitation context
The supplied CVSS vector indicates local attack access, low complexity, low privileges, and potentially high confidentiality, integrity, and availability impact. The CVE is not listed as KEV, and the supplied sources provide no evidence of active exploitation or a public exploit.
Researcher notes
The vulnerable condition depends on cleanup ordering during i915 device unbind and later hwmon sysfs access. Source metadata is incomplete: affected-version boundaries are unclear, and the listed CWE-400 differs from the described memory-lifetime flaw. Confirm exposure through commit ancestry or distribution backport records rather than version strings alone.
Mitigation direction
- Update to a vendor-supported kernel containing the applicable cited stable fix or backport.
- Check distribution advisories to map packaged kernel versions to the cited commits.
- Prioritize multi-user systems where untrusted users have local access.
- Restrict unnecessary local access until affected systems are updated.
Validation and detection
- Inventory Linux systems using the Intel i915 kernel driver.
- Record running kernel and distribution package versions on those systems.
- Verify whether the packaged kernel includes an applicable cited fix commit or vendor backport.
- Review kernel logs for i915, hwmon, use-after-free, or memory-safety failures during device teardown.
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-400: 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-2024-39479 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:L/UI:N/S:U/C:H/I:H/A:H1.85.9LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/cfa73607eb21a4ce1d6294a2c5733628897b48a2CVE reference, Linux
- https://git.kernel.org/stable/c/ce5a22d22db691d14516c3b8fdbf69139eb2ea8fCVE reference, Linux
- https://git.kernel.org/stable/c/5bc9de065b8bb9b8dd8799ecb4592d0403b54281CVE reference, Linux
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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.