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Vulnerability · Published Apr 18, 2025 · Assigned by Linux

CVE-2025-37838HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition

High 7.8

In plain English

A high-severity use-after-free 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 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 83.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition In the ssi_protocol_probe() function, &ssi->work is bound with ssip_xmit_work(), In ssip_pn_setup(), the ssip_pn_xmit() function within the ssip_pn_ops structure is capable of starting the work. If we remove the module which will call ssi_protocol_remove() to make a cleanup, it will free ssi through kfree(ssi), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | ssip_xmit_work ssi_protocol_remove | kfree(ssi); | | struct hsi_client *cl = ssi->cl; | // use ssi Fix it by ensuring that the work is canceled before proceeding with the cleanup in ssi_protocol_remove().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.135-1DEBIAN-CVE-2025-37838
Debian:12linux6.1.135-1DSA-5907-1
Debian:13linux6.12.25-1DEBIAN-CVE-2025-37838
Debian:14linux6.12.25-1DEBIAN-CVE-2025-37838
Ubuntu:22.04:LTSlinux5.15.0-144.157UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux6.8.0-87.88UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux6.8.0-87.88USN-7861-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-aws5.15.0-1088.95UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-aws6.8.0-1042.44USN-7861-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1042.44UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1042.44~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1042.44~22.04.1USN-7861-4
Ubuntu:22.04:LTSlinux-azure5.15.0-1094.103UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-azure6.8.0-1044.50UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-azure6.8.0-1044.50USN-7935-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1044.50~22.04.1USN-7935-1
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1044.50~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1094.103.1UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1046.53UBUNTU-CVE-2025-37838
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1046.53~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1029.32UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-gcp5.15.0-1087.96UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-gcp6.8.0-1043.46UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-gcp6.8.0-1043.46USN-7864-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1043.46~22.04.1USN-7864-1
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1043.46~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-gke5.15.0-1085.91UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-gke6.8.0-1039.44USN-7864-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1039.44UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1070.78UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1026.29USN-7861-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1026.29UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-87.88~22.04.1USN-7861-1
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-87.88~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-ibm5.15.0-1080.83UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-ibm6.8.0-1040.40UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-ibm6.8.0-1040.40USN-7861-1
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1040.40~22.04.1USN-7861-1
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1040.40~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1083.89UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-kvm5.15.0-1084.89UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-144.157UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-87.88.1UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-87.88.1USN-7861-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-87.88.1~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-87.88.1~22.04.1USN-7861-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1082.83UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1042.45UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1042.45USN-7861-1
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1042.45~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1042.45~22.04.1USN-7861-3
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1042.45.1UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1042.45.1USN-7861-1
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1041.41UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1012.12UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1030.30UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-oracle5.15.0-1085.91UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-oracle6.8.0-1039.40UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-oracle6.8.0-1039.40USN-7861-3
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1039.40~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1039.40~22.04.1USN-7861-3
Ubuntu:22.04:LTSlinux-raspi5.15.0-1083.86UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-raspi6.8.0-1042.46USN-7861-5
Ubuntu:24.04:LTSlinux-raspi6.8.0-1042.46UBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-87.88~22.04.1UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-37838
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1019.20USN-7861-5
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1019.20UBUNTU-CVE-2025-37838
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1052.56UBUNTU-CVE-2025-37838

Affected products (as reported)

VendorProductVersions
Linux Linux df26d639e2f4628732a8da5a0f71e4e652ce809b – before d03abc1c2b21324550fa71e12d53e7d3498e0af6df26d639e2f4628732a8da5a0f71e4e652ce809b – before 4a8c29beb8a02b5a0a9d77d608aa14b6f88a6b86df26d639e2f4628732a8da5a0f71e4e652ce809b – before 72972552d0d0bfeb2dec5daf343a19018db36ffadf26d639e2f4628732a8da5a0f71e4e652ce809b – before d58493832e284f066e559b8da5ab20c15a2801d3df26d639e2f4628732a8da5a0f71e4e652ce809b – before 58eb29dba712ab0f13af59ca2fe545f5ce360e78df26d639e2f4628732a8da5a0f71e4e652ce809b – before ae5a6a0b425e8f76a9f0677e50796e494e89b088df26d639e2f4628732a8da5a0f71e4e652ce809b – before 834e602d0cc7c743bfce734fad4a46cefc0f9ab1df26d639e2f4628732a8da5a0f71e4e652ce809b – before 4b4194c9a7a8f92db39e8e86c85f4fb12ebbec4f
Linux Linux 4.8

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References