Vulnerability · Published Jan 23, 2026 · Assigned by Linux
CVE-2025-71155KVM: s390: Fix gmap_helper_zap_one_page() again
High 7.8
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.1%top 97.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix gmap_helper_zap_one_page() again A few checks were missing in gmap_helper_zap_one_page(), which can lead to memory corruption in the guest under specific circumstances. Add the missing checks.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | linux | 6.18.5-1 | DEBIAN-CVE-2025-71155 |
| Ubuntu:25.10 | linux | 6.17.0-29.29 | USN-8277-1 |
| Ubuntu:25.10 | linux | 6.17.0-29.29 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-aws | 6.17.0-1015.15 | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-aws | 6.17.0-1015.15 | USN-8277-1 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | 6.17.0-1017.17~24.04.1 | USN-8374-1 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | 6.17.0-1017.17~24.04.1 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-azure | 6.17.0-1015.15 | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-azure | 6.17.0-1015.15 | USN-8310-1 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-azure-6.17 | 6.17.0-1015.15~24.04.1 | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-azure-6.17 | 6.17.0-1015.15~24.04.1 | USN-8310-1 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-azure-fde | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-gcp | 6.17.0-1018.19 | USN-8374-1 |
| Ubuntu:25.10 | linux-gcp | 6.17.0-1018.19 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-gcp-6.17 | 6.17.0-1018.19~24.04.1 | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-gcp-6.17 | 6.17.0-1018.19~24.04.1 | USN-8374-1 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-hwe-6.17 | 6.17.0-29.29~24.04.1 | USN-8277-1 |
| Ubuntu:24.04:LTS | linux-hwe-6.17 | 6.17.0-29.29~24.04.1 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-nvidia-6.17 | 6.17.0-1026.26 | USN-8508-1 |
| Ubuntu:24.04:LTS | linux-nvidia-6.17 | 6.17.0-1026.26 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-oem-6.17 | 6.17.0-1023.23 | USN-8277-1 |
| Ubuntu:24.04:LTS | linux-oem-6.17 | 6.17.0-1023.23 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-oracle | 6.17.0-1014.14 | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-oracle | 6.17.0-1014.14 | USN-8277-1 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-oracle-6.17 | 6.17.0-1014.14~24.04.1 | USN-8277-2 |
| Ubuntu:24.04:LTS | linux-oracle-6.17 | 6.17.0-1014.14~24.04.1 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-raspi | 6.17.0-1017.17 | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-raspi | 6.17.0-1017.17 | USN-8277-1 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-realtime | 6.17.0-1013.15 | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-realtime | 6.17.0-1013.15 | USN-8277-1 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:25.10 | linux-riscv | 6.17.0-29.29.1 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:24.04:LTS | linux-riscv-6.17 | 6.17.0-29.29.1~24.04.1 | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2025-71155 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2025-71155 |