CVE-2026-89963
Received
Received - Intake
BaseFortify
Vulnerability report for CVE-2026-89963, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-16
Last updated on: 2026-09-16
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
powerpc/kexec_file: Fix null-ptr-def in extra size calculation
A static Sashiko AI review identified a potential NULL pointer
dereference in kexec_extra_fdt_size_ppc64().
On platforms without any reserved memory regions,
get_reserved_memory_ranges() can return 0 while leaving 'rmem'
unallocated as NULL. Passing it directly leads to a kernel panic when
evaluating 'rmem->nr_ranges'.
Add a NULL check for 'rmem' to prevent this crash.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 0d3ff067331ef84e7e7f49537d768881042ed5ba |
| Linux | Linux | 0d3ff067331ef84e7e7f49537d768881042ed5ba |
| Linux | Linux | 0d3ff067331ef84e7e7f49537d768881042ed5ba |
| Linux | Linux | 0d3ff067331ef84e7e7f49537d768881042ed5ba |
| Linux | Linux | 6.11 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
