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Vulnerability · Published Sep 16, 2025 · Assigned by Linux

CVE-2023-53330caif: fix memory leak in cfctrl_linkup_request()

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 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 95.9% 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: caif: fix memory leak in cfctrl_linkup_request() When linktype is unknown or kzalloc failed in cfctrl_linkup_request(), pkt is not released. Add release process to error path.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.7-1DEBIAN-CVE-2023-53330
Debian:13linux6.1.7-1DEBIAN-CVE-2023-53330
Debian:14linux6.1.7-1DEBIAN-CVE-2023-53330
Ubuntu:22.04:LTSlinux5.15.0-69.76UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-aws5.15.0-1033.37UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-azure5.15.0-1035.42UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1035.42.1UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-gcp5.15.0-1031.38UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-gke5.15.0-1030.35UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1017.22UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-ibm5.15.0-1027.30UBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1027.32UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-kvm5.15.0-1030.35UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-69.76UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1023.23UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-oracle5.15.0-1032.38UBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-raspi5.15.0-1026.28UBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53330
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-53330
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-53330

Affected products (as reported)

VendorProductVersions
Linux Linux b482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before badea57569db04b010e922e29a7aaf40a979a70bb482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before 3acf3783a84cbdf0c9f8cf2f32ee9c49af93a2dab482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before 33df9c5d5e2a18c70f5f5f3c2757d654c1b6ffa3b482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before 84b2cc7b36b7f6957d307fb3d01603f93cb2d655b482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before dc1bc903970bdf63ca40ab923d3ccb765da9a8d9b482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before 1dddeceb26002cfea4c375e92ac6498768dc7349b482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before 3ad47c8aa5648226184415e4a0cb1bf67ffbfd48b482cd2053e3b90a7b33a78c63cdb6badf2ec383 – before fe69230f05897b3de758427b574fc98025dfc907
Linux Linux 2.6.35

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

References