Improper locking in Linux kernel - CVE-2025-10263

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU138177

Improper locking in Linux kernel - CVE-2025-10263

Published: July 17, 2026


Vulnerability identifier: #VU138177
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-10263
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper hardware synchronization in broadcast TLBI completion on affected arm64 CPUs when performing broadcast TLB invalidation. A local user can trigger memory access activity that relies on an invalidated TLB entry to cause a denial of service.

The issue affects only the completion of memory accesses translated by an invalidated TLB entry; the TLB invalidation itself still occurs correctly.


Affected software

Linux kernel
Debian Linux
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
openEuler
Ubuntu
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel (Red Hat package)
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-devel
kernel-source
kernel-tools
kernel-tools-debuginfo
perf
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf
python3-perf-debuginfo
kernel-tools-devel
xen
kernel-headers
kernel-rt (Red Hat package)
xen (Debian package)
linux-aws (Ubuntu package)
linux (Ubuntu package)
linux-fips (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux-ibm-5.15 (Ubuntu package)
linux-aws-5.15 (Ubuntu package)
linux-oracle-5.15 (Ubuntu package)
linux-gcp-5.15 (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-oracle-7.0 (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux-ibm (Ubuntu package)
linux-azure-7.0 (Ubuntu package)
linux-raspi (Ubuntu package)
Red Hat OpenShift Container Platform

How to mitigate CVE-2025-10263

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel (Red Hat package) - addressed in versions 4.18.0-305.200.1.el8_4, 4.18.0-372.204.1.el8_6, 4.18.0-477.158.1.el8_8, 5.14.0-284.186.1.el9_2, 5.14.0-427.143.1.el9_4, 5.14.0-570.131.1.el9_6
kernel-debugsource - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
bpftool-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
bpftool - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-devel - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-source - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-tools - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-tools-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
perf - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
perf-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
python2-perf - update to 4.19.90-2607.4.0.0382
python2-perf-debuginfo - update to 4.19.90-2607.4.0.0382
python3-perf - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
python3-perf-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-tools-devel - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
xen - update to 4.20.4-1.fc43
kernel-headers - addressed in versions 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-rt (Red Hat package) - update to 5.14.0-284.186.1.rt14.471.el9_2
Red Hat OpenShift Container Platform - addressed in versions 4.12.96, 4.18.53, 4.22.6
xen (Debian package) - update to 4.20.3+127-gc42374a105-0+deb13u1
linux-aws (Ubuntu package) - addressed in versions 5.15.0-194.204~20.04.1, 5.15.0-194.204, 5.15.0-1079.83, 5.15.0-1099.107, 5.15.0-1108.110, 5.15.0-1108.113, 5.15.0-1110.114, 5.15.0-1111.117, 5.15.0-1112.118, 5.15.0-1113.119, 5.15.0-1115.124, 5.15.0-1116.123, 5.15.0-1116.123+fips1, 5.15.0-1116.126+fips1, 5.15.0-1117.127, 5.15.0-1121.130, 5.15.0-1122.131, 5.15.0-1122.131+fips1, 5.15.0.194.159, 5.15.0.1079.82, 5.15.0.1099.98, 5.15.0.1108.104, 5.15.0.1108.112, 5.15.0.1110.107, 5.15.0.1111.110, 5.15.0.1112.111, 5.15.0.1113.109, 5.15.0.1115.119, 5.15.0.1116.106, 5.15.0.1116.112, 5.15.0.1116.119, 5.15.0.1117.114, 5.15.0.1122.106, 5.15.0.1122.120, 6.8.0-1065.68~22.04.1, 6.8.0-1065.68
linux (Ubuntu package) - addressed in versions 5.15.0-194.204, 5.15.0-1111.112, 5.15.0.194.171, 5.15.0.1111.111, 6.8.0-142.142+fips1, 6.8.0-142.142.1~22.04.1, 6.8.0-142.142.1, 6.8.0-1050.54, 6.8.0-1062.65~22.04.1, 6.8.0-1064.72+fips1, 6.8.0-1065.66, 6.8.0-1065.69, 6.8.0-1066.73~22.04.1, 6.8.0-1066.73, 6.8.0-1068.76~22.04.1, 6.8.0-1068.76, 6.8.0-1068.76+fips1, 6.8.0-1069.77~22.04.1, 6.8.0-1069.77, 6.8.0-2054.56, 6.8.1-1060.61~22.04.1, 6.8.1-1060.61, 7.0.0-31.31~24.04.1, 7.0.0-31.31, 7.0.0-31.31.1, 7.0.0-1006.7, 7.0.0-1011.11~24.04.1, 7.0.0-1012.12~24.04.1, 7.0.0-1012.12
linux-fips (Ubuntu package) - addressed in versions 5.15.0-194.204+fips1, 5.15.0.194.113
linux-nvidia-tegra (Ubuntu package) - addressed in versions 5.15.0-1057.57, 5.15.0-1068.70, 5.15.0.1057.59, 5.15.0.1068.68, 6.8.0-1035.38
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1068.70~20.04.1
linux-ibm-5.15 (Ubuntu package) - update to 5.15.0-1110.114~20.04.1
linux-aws-5.15 (Ubuntu package) - addressed in versions 5.15.0-1111.117~20.04.1, 5.15.0-1116.123~20.04.1, 5.15.0-1121.130~20.04.1, 5.15.0-1122.131~20.04.1
linux-oracle-5.15 (Ubuntu package) - addressed in versions 5.15.0-1114.120~20.04.1, 5.15.0.1114.120~20.04.1
linux-gcp-5.15 (Ubuntu package) - addressed in versions 5.15.0-1118.128~20.04.1, 5.15.0.1118.128~20.04.1
linux-aws-fips (Ubuntu package) - update to 6.8.0-1065.68+fips1
linux-oracle-7.0 (Ubuntu package) - update to 7.0.0-1011.11~24.04.1
linux-gcp-7.0 (Ubuntu package) - update to 7.0.0-1011.11~24.04.1
linux-azure (Ubuntu package) - addressed in versions 7.0.0-1011.11, 7.0.0-1014.14
linux-azure-fde (Ubuntu package) - update to 7.0.0-1013.13~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1013.13
linux-ibm (Ubuntu package) - update to 7.0.0-1013.13
linux-azure-7.0 (Ubuntu package) - update to 7.0.0-1014.14~24.04.1
linux-raspi (Ubuntu package) - update to 7.0.0-1019.19

External References

Related Security Bulletins