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Vulnerability · Published Feb 23, 2024 · Assigned by Linux

CVE-2024-26594ksmbd: validate mech token in session setup

Critical 9.1

In plain English

A critical-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 51.2% (higher than 99% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)51.2%top 1.1% 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: ksmbd: validate mech token in session setup If client send invalid mech token in session setup request, ksmbd validate and make the error if it is invalid.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.76-1DEBIAN-CVE-2024-26594
Debian:13linux6.6.15-1DEBIAN-CVE-2024-26594
Debian:14linux6.6.15-1DEBIAN-CVE-2024-26594
Ubuntu:22.04:LTSlinux5.15.0-106.116USN-6766-1
Ubuntu:22.04:LTSlinux5.15.0-106.116UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-aws5.15.0-1061.67USN-6766-3
Ubuntu:22.04:LTSlinux-aws5.15.0-1061.67UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-azure5.15.0-1063.72UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-azure5.15.0-1063.72USN-6766-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-azure-6.56.5.0-1022.23~22.04.1UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1063.72.1UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1063.72.1USN-6766-1
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-gcp5.15.0-1059.67UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-gcp5.15.0-1059.67USN-6766-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-gcp-6.56.5.0-1022.24~22.04.1UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-gke5.15.0-1058.63UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-gke5.15.0-1058.63USN-6766-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1044.51USN-6766-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1044.51UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-hwe-6.56.5.0-41.41~22.04.2UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-ibm5.15.0-1054.57USN-6766-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1054.57UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1057.63USN-6795-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1057.63UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-kvm5.15.0-1058.63UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-kvm5.15.0-1058.63USN-6766-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-106.116USN-6766-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-106.116UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.56.5.0-41.41.1~22.04.1UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1054.55USN-6766-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1054.55UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1021.22UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1026.26UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1015.15UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1035.35UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-oem-6.56.5.0-1024.25UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-oracle5.15.0-1059.65USN-6766-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1059.65UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-oracle-6.56.5.0-1024.24~22.04.1UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-raspi5.15.0-1054.57USN-6766-2
Ubuntu:22.04:LTSlinux-raspi5.15.0-1054.57UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-riscv-6.56.5.0-40.40.1~22.04.1UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-starfive-6.56.5.0-1015.16~22.04.1UBUNTU-CVE-2024-26594
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2024-26594

Affected products (as reported)

VendorProductVersions
Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf – before dd1de9268745f0eac83a430db7afc32cbd62e84b0626e6641f6b467447c81dd7678a69c66f7746cf – before 6eb8015492bcc84e40646390e50a862b2c0529c90626e6641f6b467447c81dd7678a69c66f7746cf – before a2b21ef1ea4cf632d19b3a7cc4d4245b8e63202a0626e6641f6b467447c81dd7678a69c66f7746cf – before 5e6dfec95833edc54c48605a98365a7325e5541e0626e6641f6b467447c81dd7678a69c66f7746cf – before 92e470163d96df8db6c4fa0f484e4a229edb903d
Linux Linux 5.15

References