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Vulnerability · Published Dec 30, 2025 · Assigned by Linux

CVE-2023-54280cifs: fix potential race when tree connecting ipc

Critical 9.8

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 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.5%top 55.9% 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: cifs: fix potential race when tree connecting ipc Protect access of TCP_Server_Info::hostname when building the ipc tree name as it might get freed in cifsd thread and thus causing an use-after-free bug in __tree_connect_dfs_target(). Also, while at it, update status of IPC tcon on success and then avoid any extra tree connects.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2023-54280
Debian:13linux6.3.7-1DEBIAN-CVE-2023-54280
Debian:14linux6.3.7-1DEBIAN-CVE-2023-54280
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-azure5.15.0-1051.59UBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1051.59.1UBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-54280
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2023-54280

Affected products (as reported)

VendorProductVersions
Linux Linux c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e – before 536ec71ba060a02fabe8e22cecb82fe7b3a8708bc88f7dcd6d6429197fc2fd87b54a894ffcd48e8e – before 553476df55a111e6a66ad9155256aec0ec1b7ad0c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e – before ee20d7c6100752eaf2409d783f4f1449c29ea33d81d583baa5f1abd73c755ce1992929debd20b6875.15.81 – before 5.16
Linux Linux 5.16

References