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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-72013 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/606cc45e871e34b80a2f63874f069387a5b44176 kernel.org
https://git.kernel.org/stable/c/6ad6954492697681ebcfc1beb0eb384406cd4b65 kernel.org
https://git.kernel.org/stable/c/81bbcff0c053c4f5c711c31a9b72fc492bd96c3f kernel.org
https://git.kernel.org/stable/c/b5f92cc4e24a298bf390b0b189a4b888c0900161 kernel.org
https://git.kernel.org/stable/c/c462e15497dc40abe369b3be7a2c91ac5d1be6f9 kernel.org
https://git.kernel.org/stable/c/d5b2752a17efc165793ae38f2c24b5ed9c04ffde kernel.org
https://git.kernel.org/stable/c/eadd0c2c76aee6a738f17f251434c77db3c606c8 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-72013
NVD Published Date:
08/15/2026
NVD Last Modified:
08/15/2026
Source:
kernel.org