PT-2025-33571 · Linux+5 · Linux Kernel+5

Published

2025-08-16

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Updated

2026-05-26

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CVE-2025-38528

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: The Linux kernel contains a flaw in the BPF subsystem where the %p% format string in bprintf-like helpers is not rejected. This results in a kernel warning at runtime, specifically "Please remove unsupported %x00 in format string." The issue occurs because bpf bprintf prepare incorrectly skips punctuation during processing, allowing the % character to be processed in a subsequent iteration and ultimately rejected.
Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use of Externally-Controlled Format String

Weakness Enumeration

CWE-134

Related Identifiers

AZL-66410
AZL-73557
BDU:2025-15554
CVE-2025-38528
DLA-4328-1
ECHO-1198-0FC4-AA27
OESA-2025-2054
OESA-2025-2055
OESA-2025-2056
OPENSUSE-SU-2025:20081-1
SUSE-SU-2025:03272-1
SUSE-SU-2025:03290-1
SUSE-SU-2025:03301-1
SUSE-SU-2025:03382-1
SUSE-SU-2025:03602-1
SUSE-SU-2025:03633-1
SUSE-SU-2025:03634-1
SUSE-SU-2025:20653-1
SUSE-SU-2025:20669-1
SUSE-SU-2025:20739-1
SUSE-SU-2025:20756-1
SUSE-SU-2025:21074-1
SUSE-SU-2025:21139-1
SUSE-SU-2025:21179-1
SUSE-SU-2025_03272-1
SUSE-SU-2025_03290-1
SUSE-SU-2025_03301-1
SUSE-SU-2025_03382-1
USN-7879-1
USN-7879-2
USN-7879-3
USN-7879-4
USN-7880-1
USN-7909-1
USN-7909-2
USN-7909-3
USN-7909-4
USN-7909-5
USN-7910-1
USN-7910-2
USN-7933-1
USN-7934-1
USN-7938-1
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
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu