Security readout for executives and security teams
Plain-English summary
CVE-2024-26783 is a Linux kernel reliability flaw. On certain NUMA systems with automatic NUMA balancing enabled, a memory-management path can call kernel reclaim code with an invalid zone index and trigger a kernel oops. The practical business concern is unexpected system crash or service disruption on affected Linux hosts.
Executive priority
Schedule remediation through normal kernel update cycles, with higher urgency for production NUMA systems where crashes would affect availability. There is no cited active exploitation, but kernel crashes can still cause business disruption.
Technical view
The flaw is in mm/vmscan: migrate_misplaced_page can reach wakeup_kswapd() with zone index -1 when a NUMA node has no managed local memory. The kernel fix adds an index check before wakeup_kswapd(). Public data lists Linux kernel affected ranges and stable kernel commits, but no CVSS or CWE.
Likely exposure
Exposure is most likely on Linux systems running affected kernel ranges with NUMA balancing enabled and NUMA nodes lacking local managed memory. General single-node or non-NUMA systems appear less likely to hit the reported crash condition based on the source description.
Exploitation context
The provided sources do not show active exploitation, and CISA KEV status is false. The evidence describes an observed kernel oops in a specific NUMA memory-management scenario, not a public weaponized exploit. Treat impact primarily as local denial of service until stronger evidence appears.
Researcher notes
Evidence is strongest for a narrow crash condition: NUMA balancing plus a memoryless NUMA node causing wakeup_kswapd() to receive -1. The public bundle lacks CVSS, CWE, exploitability detail, and complete downstream package mapping, so validate exposure against actual kernel source or vendor backports.
Mitigation direction
- Update affected Linux kernels using vendor-supported packages or stable fixes.
- Prioritize hosts with NUMA hardware, virtualization platforms, or unusual memory topology.
- Review Debian LTS, Siemens, and relevant vendor advisories for packaged fixes.
- If patching is delayed, ask the vendor about NUMA balancing risk reduction.
- Track kernel versions against the referenced stable commit fixes.
Validation and detection
- Inventory Linux kernel versions across servers, appliances, and embedded products.
- Identify systems using NUMA balancing and NUMA nodes without local memory.
- Confirm whether deployed kernels include the referenced stable commits or vendor backports.
- Review system logs for kernel oops patterns involving wakeup_kswapd or migrate_misplaced_page.
- Map affected third-party products against Siemens or other supplier advisories.
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-2024-26783 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/e5ec1c24e71dbf144677a975d6ba91043c2193dbCVE reference, Linux
- https://git.kernel.org/stable/c/d6159bd4c00594249e305bfe02304c67c506264eCVE reference, Linux
- https://git.kernel.org/stable/c/bdd21eed8b72f9e28d6c279f6db258e090c79080CVE reference, Linux
- https://git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlCVE reference, CVE
- https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlCVE reference, siemens-SADP
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.