Log in Start free

Vulnerability · Published Apr 16, 2025 · Assigned by Linux

CVE-2025-22037ksmbd: fix null pointer dereference in alloc_preauth_hash()

High 7.5

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 68.8% (higher than 99.3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)68.8%top 0.7% 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: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2025-22037
Debian:13linux6.12.25-1DEBIAN-CVE-2025-22037
Debian:14linux6.12.25-1DEBIAN-CVE-2025-22037
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux6.8.0-101.101UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux6.8.0-101.101USN-8059-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-aws6.8.0-1047.50USN-8059-6
Ubuntu:24.04:LTSlinux-aws6.8.0-1047.50UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1047.50~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1047.50~22.04.1USN-8059-6
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-azure6.8.0-1051.57UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-azure6.8.0-1051.57USN-8125-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1018.18~24.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1USN-8126-1
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2025-22037
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-gcp6.8.0-1048.51UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-gcp6.8.0-1048.51USN-8059-3
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1016.16~24.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1048.51~22.04.1USN-8059-3
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1048.51~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-gke6.8.0-1044.49UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-gke6.8.0-1044.49USN-8059-3
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1031.34UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1031.34USN-8059-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-28.28~24.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-101.101~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-101.101~22.04.1USN-8059-1
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-ibm6.8.0-1045.45USN-8059-6
Ubuntu:24.04:LTSlinux-ibm6.8.0-1045.45UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1045.45~22.04.1USN-8059-6
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1045.45~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-101.101.1UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-101.101.1USN-8059-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.116.11.0-1015.16~24.04.2UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-101.101.1~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-101.101.1~22.04.1USN-8059-1
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1047.50USN-8059-8
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1047.50UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1012.12UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1047.50~22.04.1USN-8059-8
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1047.50~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1047.50.1USN-8059-8
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1047.50.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1024.24UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-oracle6.8.0-1044.45USN-8059-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1044.45UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1044.45~22.04.1USN-8059-3
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1044.45~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-raspi6.8.0-1048.52USN-8059-1
Ubuntu:24.04:LTSlinux-raspi6.8.0-1048.52UBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-101.101~22.04.1UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-22037
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1024.25USN-8059-6
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1024.25UBUNTU-CVE-2025-22037
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2025-22037

Affected products (as reported)

VendorProductVersions
Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf – before 2d3461d6ae74ebdcd4d65128c855198649bcadcd0626e6641f6b467447c81dd7678a69c66f7746cf – before cce57cd8c5dead24127cf2308fdd60fcad2d6ba60626e6641f6b467447c81dd7678a69c66f7746cf – before ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad0626e6641f6b467447c81dd7678a69c66f7746cf – before 8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d0626e6641f6b467447c81dd7678a69c66f7746cf – before b8eb243e670ecf30e91524dd12f7260dac07d3350626e6641f6b467447c81dd7678a69c66f7746cf – before c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780
Linux Linux 5.15

References