Security readout for executives and security teams
Plain-English summary
This is a Linux kernel flaw in AMD GPU compute memory migration. A local low-privileged user could trigger a NULL pointer dereference that crashes the kernel or related GPU path, causing availability impact. Sources do not describe data theft or privilege escalation.
Executive priority
Treat as a moderate availability risk. Patch through normal kernel maintenance, accelerating for shared GPU compute systems where local users can run workloads and a crash could disrupt business operations.
Technical view
CVE-2022-49864 is CWE-476 in drivers/gpu/drm/amd/amdkfd/kfd_migrate.c. The issue is a NULL pointer dereference in svm_migrate_to_ram(). CVSS 3.1 is 5.5, local attack vector, low complexity, low privileges, no user interaction, and high availability impact only.
Likely exposure
Exposure is most relevant to Linux systems using AMD GPU KFD/SVM functionality. The source metadata names Linux kernel versions including 5.14, 5.15.79, 6.0.9, and 6.1, but the provided bundle does not fully clarify all affected range boundaries.
Exploitation context
The CVE is not listed as KEV in the bundle, and no cited source states active exploitation. The scoring indicates local, low-privilege conditions with no user interaction, so internet-facing remote exploitation is not supported by the provided evidence.
Researcher notes
The public evidence identifies a NULL dereference in svm_migrate_to_ram() and stable kernel commits. The bundle does not provide exploit details, operational mitigations, or complete affected-range semantics, so validation should rely on vendor kernel package status.
Mitigation direction
- Update affected Linux kernels using vendor or distribution kernel packages.
- Confirm the update includes the referenced stable kernel fixes.
- Prioritize hosts with AMD GPU compute workloads or exposed local multi-user access.
- If patch timing is constrained, check vendor guidance for temporary mitigations.
- Track distribution advisories for precise affected package versions.
Validation and detection
- Inventory Linux hosts with AMD GPUs or amdkfd enabled.
- Compare running kernel versions against vendor advisories and fixed package versions.
- Check whether referenced stable commits are present in the deployed kernel tree.
- Run vulnerability scanning after kernel updates and reboots.
- Document any exception where vendor guidance is still pending.
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-476: 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-2022-49864 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:L/UI:N/S:U/C:N/I:N/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
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:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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/3c1bb6187e566143f15dbf0367ae671584aead5bCVE reference, Linux
- https://git.kernel.org/stable/c/613d5a9a440828970f1543b962779401ac2c9c62CVE reference, Linux
- https://git.kernel.org/stable/c/5b994354af3cab770bf13386469c5725713679afCVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.