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Vulnerability · Published Sep 17, 2025 · Assigned by Linux

CVE-2023-53358ksmbd: fix racy issue under cocurrent smb2 tree disconnect

High 8.8

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 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.4%top 67.5% 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: fix racy issue under cocurrent smb2 tree disconnect There is UAF issue under cocurrent smb2 tree disconnect. This patch introduce TREE_CONN_EXPIRE flags for tcon to avoid cocurrent access.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.37-1DEBIAN-CVE-2023-53358
Debian:13linux6.3.7-1DEBIAN-CVE-2023-53358
Debian:14linux6.3.7-1DEBIAN-CVE-2023-53358
Ubuntu:22.04:LTSlinux5.15.0-102.112UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-aws5.15.0-1057.63UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-azure5.15.0-1060.69UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1060.69.1UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-gcp5.15.0-1055.63UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-gke5.15.0-1054.59UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1040.46UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-ibm5.15.0-1050.53UBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1052.58UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-kvm5.15.0-1054.59UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-102.112UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1048.48UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1025.25UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1012.12UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-oracle5.15.0-1055.61UBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-raspi5.15.0-1050.53UBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53358
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-53358
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2023-53358

Affected products (as reported)

VendorProductVersions
Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf – before b36295c17fb97424406f0c3ab321b1ccaabb9be80626e6641f6b467447c81dd7678a69c66f7746cf – before bd80d35725a0cf4df9307bfe2f1a3b2cb983d8e60626e6641f6b467447c81dd7678a69c66f7746cf – before dc1c17716c099c90948ebb83e2170dd75a3be6b60626e6641f6b467447c81dd7678a69c66f7746cf – before 39366b47a59d46af15ac57beb0996268bf911f6a0626e6641f6b467447c81dd7678a69c66f7746cf – before 30210947a343b6b3ca13adc9bfc88e1543e16dd5
Linux Linux 5.15

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

References