Skip to main content

Linux Kernel CVE-2025-38498

MEDIUM
2025-07-30 416baaa9-dc9f-4396-8d5f-8c081fb06d67
5.5
CVSS 3.1 · NVD
Share

Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
7.3 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
May 12, 2026 - 13:33 vuln.today
CVE Published
Jul 30, 2025 - 06:15 nvd
MEDIUM 5.5

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

do_change_type(): refuse to operate on unmounted/not ours mounts

Ensure that propagation settings can only be changed for mounts located in the caller's mount namespace. This change aligns permission checking with the rest of mount(2).

AnalysisAI

Denial of service via mount namespace privilege escalation in Linux kernel allows local authenticated users to crash the system by changing propagation settings on mounts outside their namespace. The do_change_type() function in the mount subsystem failed to validate that mounts belong to the caller's namespace, enabling unprivileged users with local access to trigger an availability impact. CVSS 5.5 reflects local authentication requirement and denial of service scope; EPSS 0.04% indicates low real-world exploitation probability despite the vulnerability being patched upstream.

Technical ContextAI

The Linux kernel's mount propagation system controls how mount events propagate across mount namespaces via the do_change_type() syscall (mount(2) with MS_SHARED, MS_PRIVATE, MS_SLAVE, MS_UNBINDABLE flags). The vulnerability stems from insufficient namespace boundary validation in the propagation permission checking logic. CWE classification not specified, but this is fundamentally a namespace isolation bypass (related to CWE-269: Improper Access Control). The fix enforces that only mounts located in the caller's mount namespace can have their propagation settings modified, aligning with security model used elsewhere in mount(2). CPE data indicates the vulnerability affects generic Linux kernel binaries across all versions, with Debian Linux 11.0 also explicitly listed.

RemediationAI

Apply upstream patch via kernel upgrade to a fixed stable version. Users should identify their kernel version (uname -r) and obtain the corresponding patched stable release containing commit 064014f7812744451d5d0592f3d2bcd727f2ee93 or later equivalents. Debian users should upgrade linux-image packages via apt-get update && apt-get install linux-image-amd64 (or architecture-specific variant) following Debian LTS announcements at https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html. For systems unable to immediately patch, restrict mount(2) syscall access via seccomp or AppArmor profiles to prevent unprivileged users from calling MS_SHARED, MS_PRIVATE, MS_SLAVE, MS_UNBINDABLE operations. Use PAM or cgroup restrictions to deny login shells to untrusted local users if namespace isolation is critical. Note: mount restrictions may break legitimate container runtimes or systemd-nspawn usage, so changes require testing.

CVE-2025-49113 CRITICAL POC
9.9 Jun 02

Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows au

CVE-2026-24061 CRITICAL POC
9.8 Jan 21

GNU Inetutils telnetd through version 2.7 contains a critical authentication bypass that allows remote attackers to gain

CVE-2025-32433 CRITICAL POC
10.0 Apr 16

Erlang/OTP SSH server allows unauthenticated remote code execution by exploiting a flaw in SSH protocol message handling

CVE-2017-11610 HIGH POC
8.8 Aug 23

The XML-RPC server in supervisor before 3.0.1, 3.1.x before 3.1.4, 3.2.x before 3.2.4, and 3.3.x before 3.3.3 allows rem

CVE-2015-0235 CRITICAL POC
10.0 Jan 28

Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18,

CVE-2014-3704 HIGH POC
7.5 Oct 16

The expandArguments function in the database abstraction API in Drupal core 7.x before 7.32 does not properly construct

CVE-2013-0156 HIGH POC
7.5 Jan 13

active_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, an

CVE-2017-12629 CRITICAL POC
9.8 Oct 14

Remote code execution occurs in Apache Solr before 7.1 with Apache Lucene before 7.1 by exploiting XXE in conjunction wi

CVE-2017-14492 CRITICAL POC
9.8 Oct 03

Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execut

CVE-2014-2323 CRITICAL POC
9.8 Mar 14

SQL injection vulnerability in mod_mysql_vhost.c in lighttpd before 1.4.35 allows remote attackers to execute arbitrary

CVE-2016-2098 HIGH POC
7.3 Apr 07

Action Pack in Ruby on Rails before 3.2.22.2, 4.x before 4.1.14.2, and 4.2.x before 4.2.5.2 allows remote attackers to e

CVE-2016-6662 CRITICAL POC
9.8 Sep 20

Oracle MySQL through 5.5.52, 5.6.x through 5.6.33, and 5.7.x through 5.7.15; MariaDB before 5.5.51, 10.0.x before 10.0.2

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container suse/sl-micro/6.0/base-os-container:2.1.3-7.44 Container suse/sl-micro/6.1/base-os-container:2.2.1-5.27 Image SL-Micro Image SL-Micro-Azure Image SL-Micro-BYOS-Azure Image SL-Micro-BYOS-EC2 Image SL-Micro-BYOS-GCE Image SL-Micro-EC2 Image SLE-Micro Image SLE-Micro-Azure Image SLE-Micro-BYOS Image SLE-Micro-BYOS-Azure Image SLE-Micro-BYOS-EC2 Image SLE-Micro-BYOS-GCE Image SLE-Micro-EC2 Image SLE-Micro-GCE Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-Azure-llc Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd Affected
Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.67 Container suse/sl-micro/6.1/kvm-os-container:2.2.1-5.29 Affected
Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.76 Container suse/sl-micro/6.1/rt-os-container:2.2.1-5.14 Affected
Container suse/sle-micro-rancher/5.2:latest Image SLES15-SP3-Micro-5-2-BYOS-Azure Affected
Container suse/sle-micro-rancher/5.3:latest Container suse/sle-micro-rancher/5.4:5.4.4.5.60 Image SLES15-SP4-BYOS Image SLES15-SP4-BYOS-Azure Image SLES15-SP4-BYOS-EC2 Image SLES15-SP4-BYOS-GCE Image SLES15-SP4-CHOST-BYOS Image SLES15-SP4-CHOST-BYOS-Aliyun Image SLES15-SP4-CHOST-BYOS-Azure Image SLES15-SP4-CHOST-BYOS-EC2 Image SLES15-SP4-CHOST-BYOS-GCE Image SLES15-SP4-CHOST-BYOS-SAP-CCloud Image SLES15-SP4-HPC-BYOS Image SLES15-SP4-HPC-BYOS-Azure Image SLES15-SP4-HPC-BYOS-EC2 Image SLES15-SP4-HPC-BYOS-GCE Image SLES15-SP4-HPC-EC2 Image SLES15-SP4-HPC-GCE Image SLES15-SP4-Hardened-BYOS Image SLES15-SP4-Hardened-BYOS-Azure Image SLES15-SP4-Hardened-BYOS-EC2 Image SLES15-SP4-Hardened-BYOS-GCE Image SLES15-SP4-Manager-Proxy-4-3-BYOS Image SLES15-SP4-Manager-Proxy-4-3-BYOS-Azure Image SLES15-SP4-Manager-Proxy-4-3-BYOS-EC2 Image SLES15-SP4-Manager-Proxy-4-3-BYOS-GCE Image SLES15-SP4-Manager-Server-4-3-BYOS Image SLES15-SP4-Manager-Server-4-3-BYOS-Azure Image SLES15-SP4-Manager-Server-4-3-BYOS-EC2 Image SLES15-SP4-Manager-Server-4-3-BYOS-GCE Image SLES15-SP4-Micro-5-3 Image SLES15-SP4-Micro-5-3-BYOS Image SLES15-SP4-Micro-5-3-BYOS-Azure Image SLES15-SP4-Micro-5-3-BYOS-EC2 Image SLES15-SP4-Micro-5-3-BYOS-GCE Image SLES15-SP4-Micro-5-3-EC2 Image SLES15-SP4-Micro-5-4 Image SLES15-SP4-Micro-5-4-BYOS Image SLES15-SP4-Micro-5-4-BYOS-Azure Image SLES15-SP4-Micro-5-4-BYOS-EC2 Image SLES15-SP4-Micro-5-4-BYOS-GCE Image SLES15-SP4-Micro-5-4-EC2 Image SLES15-SP4-Micro-5-4-GCE Image SLES15-SP4-SAP Image SLES15-SP4-SAP-Azure Image SLES15-SP4-SAP-EC2 Image SLES15-SP4-SAP-GCE Image SLES15-SP4-SAPCAL Image SLES15-SP4-SAPCAL-Azure Image SLES15-SP4-SAPCAL-EC2 Image SLES15-SP4-SAPCAL-GCE Affected

Share

CVE-2025-38498 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy