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Vulnerability · Published Sep 17, 2025 · Assigned by Linux

CVE-2023-53346kernel/fail_function: fix memory leak with using debugfs_lookup()

Medium 5.5

In plain English

A medium-severity memory leak 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 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 89.7% 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: kernel/fail_function: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.20-1DEBIAN-CVE-2023-53346
Debian:13linux6.1.20-1DEBIAN-CVE-2023-53346
Debian:14linux6.1.20-1DEBIAN-CVE-2023-53346
Ubuntu:22.04:LTSlinux5.15.0-79.86UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-aws5.15.0-1042.47UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-azure5.15.0-1045.52UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1045.52.1UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-gcp5.15.0-1039.47UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-gke5.15.0-1039.44UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1025.30UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-ibm5.15.0-1035.38UBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1037.42UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-kvm5.15.0-1039.44UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-79.88UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1030.30UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1016.16UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1002.2UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-oracle5.15.0-1040.46UBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-raspi5.15.0-1035.38UBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53346
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-53346
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1025.29UBUNTU-CVE-2023-53346

Affected products (as reported)

VendorProductVersions
Linux Linux 4b1a29a7f5425d32640b34b8a755f34e02f64d0f – before f6d3aee1c66358471275df9dddd480010f061b0e4b1a29a7f5425d32640b34b8a755f34e02f64d0f – before dd9981a11d74ff2eb253bb5c459876f8bd3c6c364b1a29a7f5425d32640b34b8a755f34e02f64d0f – before bb99db06b8b6ce9351633fc61bec9919d8f6f52b4b1a29a7f5425d32640b34b8a755f34e02f64d0f – before 29d53c4c5a6f6d2b93aaac95b65cb4c907faf2ff4b1a29a7f5425d32640b34b8a755f34e02f64d0f – before 94f68f3e059c478e240f65fcb64746fe371295df4b1a29a7f5425d32640b34b8a755f34e02f64d0f – before 2bb3669f576559db273efe49e0e69f82450efbca
Linux Linux 4.16

Weakness: CWE-401 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References