Security readout for executives and security teams
Plain-English summary
This is a Linux kernel AMDGPU driver flaw where repeated bad-page handling can free the same err_addr pointer more than once. The public record does not provide CVSS, CWE, or confirmed business impact. Treat it as a kernel stability and maintenance issue for Linux systems using AMD GPUs until distro advisories classify it further.
Executive priority
Handle through normal kernel patch management unless internal asset data shows broad AMDGPU deployment in sensitive workloads. There is not enough public evidence to justify emergency response, but kernel memory-management defects should not be left indefinitely unpatched.
Technical view
amdgpu_umc_bad_page_polling_timeout can run amdgpu_umc_handle_bad_pages many times. In special cases, err_addr may be double-freed. The upstream fix sets err_addr to NULL after handling to avoid repeated free warnings. Sources identify Linux kernel AMDGPU code and reference two stable commits as fixes.
Likely exposure
Exposure is most relevant on Linux systems using the AMDGPU driver, especially where affected kernel versions or unfixed downstream packages are deployed. Systems without AMDGPU usage are less likely to reach this code path. The source bundle’s affected version data is sparse and should be verified against distribution advisories.
Exploitation context
The provided sources do not report active exploitation, public exploit code, or KEV listing. They also do not describe attacker prerequisites or a security impact beyond double-free warnings. Avoid assuming remote exploitability or privilege escalation from the available evidence.
Researcher notes
Evidence is limited to the CVE description and upstream stable commit references. No CVSS, CWE, exploit status, trigger details, or distribution package matrix is provided. Validation should focus on commit presence, AMDGPU driver reachability, and downstream advisory mapping rather than speculative impact.
Mitigation direction
- Update to a vendor or distro kernel containing the referenced stable fixes.
- Check Linux distribution advisories for backported fixes and package-specific version guidance.
- Prioritize AMD GPU fleet segments and systems loading the AMDGPU driver.
- If immediate patching is blocked, monitor kernel logs for related AMDGPU memory warnings.
Validation and detection
- Inventory Linux kernel versions across systems with AMD GPUs.
- Confirm whether the amdgpu module is present and loaded on exposed hosts.
- Map deployed distro kernel packages to advisories referencing CVE-2024-42123.
- Verify patched kernels include commits 8e24beb3c2b0 or 506c245f3f1c, or vendor equivalents.
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.
CVE-2024-42123 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.
SSVC decision data
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/8e24beb3c2b08a4763f920399a9cc577ed440a1aCVE reference, Linux
- https://git.kernel.org/stable/c/506c245f3f1cd989cb89811a7f06e04ff8813a0dCVE 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.