PT-2025-25845 · Linux+5 · Linux Kernel+5

Published

2025-03-19

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Updated

2026-04-20

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CVE-2025-38071

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A resolved issue in the Linux kernel involves the function memblock phys alloc range(), where with a specific configuration (CONFIG PHYSICAL START=0x100000), if there is less than 4 MiB of contiguous free memory available, the kernel would crash. This happens because memblock phys alloc range() returns 0 on failure, leading memblock phys free() to incorrectly handle the first 4 MiB of physical memory. The expectation is for the kernel to fail gracefully with a meaningful diagnostic instead of crashing.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Unchecked Return Value

Weakness Enumeration

CWE-252

Related Identifiers

AZL-63983
AZL-72713
BDU:2025-11972
CVE-2025-38071
DLA-4328-1
DSA-5973-1
ECHO-1366-239E-BC98
USN-7769-1
USN-7769-2
USN-7769-3
USN-7770-1
USN-7771-1
USN-7789-1
USN-7789-2
USN-8028-1
USN-8028-2
USN-8028-3
USN-8028-4
USN-8028-5
USN-8028-6
USN-8028-7
USN-8028-8
USN-8031-1
USN-8031-2
USN-8031-3
USN-8052-1
USN-8052-2
USN-8074-1
USN-8074-2
USN-8126-1

Affected Products

Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Ubuntu