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Vulnerability · Published Sep 18, 2024 · Assigned by Linux

CVE-2024-46742smb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open()

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 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 81.8% 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: smb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open() null-ptr-deref will occur when (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) and parse_lease_state() return NULL. Fix this by check if 'lease_ctx_info' is NULL. Additionally, remove the redundant parentheses in parse_durable_handle_context().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.135-1DSA-5907-1
Debian:12linux6.1.135-1DEBIAN-CVE-2024-46742
Debian:13linux6.10.11-1DEBIAN-CVE-2024-46742
Debian:14linux6.10.11-1DEBIAN-CVE-2024-46742
Ubuntu:22.04:LTSlinux5.15.0-144.157UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux5.15.0-144.157USN-7654-1
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-aws5.15.0-1088.95UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-aws5.15.0-1088.95USN-7654-1
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure5.15.0-1094.103UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure5.15.0-1094.103USN-7711-1
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1094.103.1UBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gcp5.15.0-1087.96UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gcp5.15.0-1087.96USN-7654-1
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gke5.15.0-1085.91USN-7654-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1085.91UBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1070.78USN-7654-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1070.78UBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-ibm5.15.0-1080.83USN-7654-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1080.83UBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1083.89UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1083.89USN-7654-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1084.89UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-kvm5.15.0-1084.89USN-7654-4
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-144.157UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-144.157USN-7654-1
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1082.83UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1082.83USN-7654-1
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1041.41UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1041.41USN-7654-1
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1030.30USN-7654-1
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1030.30UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-oracle5.15.0-1085.91USN-7654-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1085.91UBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-raspi5.15.0-1083.86UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-raspi5.15.0-1083.86USN-7686-1
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2024-46742
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1052.56UBUNTU-CVE-2024-46742
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1052.56USN-7654-5

Affected products (as reported)

VendorProductVersions
Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf – before 878f32878351104448b86ef5b85d1f8ed6f599fb0626e6641f6b467447c81dd7678a69c66f7746cf – before ec28c35029b7930f31117f9284874b63bea4f31b0626e6641f6b467447c81dd7678a69c66f7746cf – before 07f384c5be1f8633b13f0a22616e227570450bc60626e6641f6b467447c81dd7678a69c66f7746cf – before 3b692794b81f2ecad69a4adbba687f3836824ada0626e6641f6b467447c81dd7678a69c66f7746cf – before 4e8771a3666c8f216eefd6bd2fd50121c6c437db
Linux Linux 5.15

References