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Vulnerability · Published Jul 3, 2025 · Assigned by Linux

CVE-2025-38135serial: Fix potential null-ptr-deref in mlb_usio_probe()

Medium 5.5

In plain English

A medium-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 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 88.3% 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: serial: Fix potential null-ptr-deref in mlb_usio_probe() devm_ioremap() can return NULL on error. Currently, mlb_usio_probe() does not check for this case, which could result in a NULL pointer dereference. Add NULL check after devm_ioremap() to prevent this issue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.147-1DEBIAN-CVE-2025-38135
Debian:13linux6.12.35-1DEBIAN-CVE-2025-38135
Debian:14linux6.12.35-1DEBIAN-CVE-2025-38135
Ubuntu:22.04:LTSlinux5.15.0-156.166USN-7774-1
Ubuntu:22.04:LTSlinux5.15.0-156.166UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux6.8.0-100.100UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-aws5.15.0-1092.99USN-7774-1
Ubuntu:22.04:LTSlinux-aws5.15.0-1092.99UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-aws6.8.0-1046.49UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1013.13~24.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure5.15.0-1096.105USN-7775-2
Ubuntu:22.04:LTSlinux-azure5.15.0-1096.105UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-azure6.8.0-1046.52UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1096.105.1UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1046.53UBUNTU-CVE-2025-38135
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1046.53~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-azure-nvidia-6.146.14.0-1007.7UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-gcp5.15.0-1092.101USN-7774-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1092.101UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-gcp6.8.0-1047.50UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1016.17~24.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1047.50~22.04.2UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-gke5.15.0-1089.95USN-7774-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1089.95UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-gke6.8.0-1043.48UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1075.83USN-7774-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1075.83UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1030.33UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-ibm5.15.0-1086.89UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-ibm5.15.0-1086.89USN-7774-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1044.44UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1044.44~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1087.93UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1087.93USN-7774-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1088.93UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-kvm5.15.0-1088.93USN-7774-4
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-156.166UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-156.166USN-7774-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-100.100.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-100.100.1~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1087.88USN-7774-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1087.88UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1046.49UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1046.49.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1045.45UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1045.45USN-7774-1
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1034.34UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1034.34USN-7774-5
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1012.12UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-oracle5.15.0-1090.96UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-oracle5.15.0-1090.96USN-7774-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1043.44UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-oracle-6.146.14.0-1013.13~24.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1043.44~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-raspi5.15.0-1086.89USN-7774-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1086.89UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-raspi6.8.0-1047.51UBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-riscv-6.146.14.0-32.32.1~24.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-38135
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1023.24UBUNTU-CVE-2025-38135
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1056.60USN-7774-1
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1056.60UBUNTU-CVE-2025-38135

Affected products (as reported)

VendorProductVersions
Linux Linux ba44dc04300441b47618f9933bf36e75a280e5fe – before a05ebe384c7ca75476453f3070c67d9cf1d1a89fba44dc04300441b47618f9933bf36e75a280e5fe – before 81159a6b064142b993f2f39828b77e199c77872aba44dc04300441b47618f9933bf36e75a280e5fe – before 19fd9f5a69363d33079097d866eb6082d61bf31dba44dc04300441b47618f9933bf36e75a280e5fe – before 548b0e81b9a0902a8bc8259430ed965663baadfcba44dc04300441b47618f9933bf36e75a280e5fe – before a6c7c365734cd0fa1c5aa225a6294fdf80cad2eaba44dc04300441b47618f9933bf36e75a280e5fe – before c23d87b43f7dba5eb12820f6cf21a1cd4f63eb3dba44dc04300441b47618f9933bf36e75a280e5fe – before e1b144aebe6fb898d96ced8c990d7aa38fda4a7aba44dc04300441b47618f9933bf36e75a280e5fe – before 86bcae88c9209e334b2f8c252f4cc66beb261886
Linux Linux 5.2

References