Security readout for executives and security teams
Plain-English summary
CVE-2024-26989 is a Linux kernel issue affecting arm64 hibernation. Under specific conditions, saving a hibernation image can hit unmapped memory and crash the kernel. The available sources point to availability and reliability risk, not data theft or remote compromise.
Executive priority
Treat this as a targeted stability issue for arm64 Linux estates, not an emergency internet-facing compromise. Prioritize patching where hibernation is used on production, embedded, workstation, or appliance-like arm64 systems.
Technical view
On arm64, swsusp_save() can fault while walking pages for hibernation because kernel_page_present() may treat MEMBLOCK_NOMAP ranges as present when direct-map changes are disabled. The kernel fix removes that shortcut so unsaveable pages are skipped. The issue was linked to a prior pfn_valid() logic change.
Likely exposure
Exposure is most likely on arm64 Linux systems running affected kernel versions where hibernation is enabled or used. Systems that do not support or use hibernation have lower practical exposure based on the provided evidence.
Exploitation context
The bundle shows a reproducible crash scenario, including QEMU with UEFI and specific kernel options. It does not cite CISA KEV listing, public exploitation, privilege escalation, or remote attack paths.
Researcher notes
Evidence supports a kernel hibernation crash caused by MEMBLOCK_NOMAP handling in arm64 page-save logic. Severity data, CVSS, CWE, and exploit-in-the-wild evidence are absent from the supplied bundle, so impact should not be overstated.
Mitigation direction
- Update affected arm64 Linux kernels using vendor-supported packages or stable kernel fixes.
- For Fedora systems, review and apply the cited Fedora kernel advisories.
- If patching is delayed, avoid hibernation on affected arm64 systems where operationally possible.
- Track Linux distribution guidance for exact fixed package versions.
Validation and detection
- Inventory arm64 Linux hosts and identify kernel versions in use.
- Check whether hibernation is enabled or operationally required on those systems.
- Confirm the installed kernel includes the relevant stable fix or vendor advisory update.
- Test hibernation recovery in staging after updating the kernel.
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-2024-26989 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/813f5213f2c612dc800054859aaa396ec8ad7069CVE reference, Linux
- https://git.kernel.org/stable/c/f7e71a7cf399f53ff9fc314ca3836dc913b05bd6CVE reference, Linux
- https://git.kernel.org/stable/c/31f815cb436082e72d34ed2e8a182140a73ebdf4CVE reference, Linux
- https://git.kernel.org/stable/c/022b19ebc31cce369c407617041a3db810db23b3CVE reference, Linux
- https://git.kernel.org/stable/c/50449ca66cc5a8cbc64749cf4b9f3d3fc5f4b457CVE reference, Linux
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/CVE reference, CVE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/CVE reference, CVE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/CVE reference, CVE
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.