CVE-2026-72013
Received
Received - Intake
BaseFortify
Vulnerability report for CVE-2026-72013, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-15
Last updated on: 2026-08-15
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
riscv: Prevent NULL pointer dereference in machine_kexec_prepare()
A NULL pointer dereference issue is noticed in riscv's
machine_kexec_prepare(), where image->segment[i].buf might be NULL and
copied unchecked.
The NULL buf comes from ima_add_kexec_buffer(), where kbuf is added by
kexec_add_buffer(), but kbuf.buffer is NULL, then it is copied without
a check in machine_kexec_prepare():
kexec_file_load
-> kimage_file_alloc_init()
-> kimage_file_prepare_segments()
-> ima_add_kexec_buffer()
-> kexec_add_buffer()
-> machine_kexec_prepare()
-> memcpy()
Address this by adding a check before the data copy attempt.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux_kernel | linux_kernel | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
