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Vulnerability · Published Sep 18, 2025 · Assigned by Linux

CVE-2023-53423objtool: Fix memory leak in create_static_call_sections()

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 95.8% 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: objtool: Fix memory leak in create_static_call_sections() strdup() allocates memory for key_name. We need to release the memory in the following error paths. Add free() to avoid memory leak.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.20-1DEBIAN-CVE-2023-53423
Debian:13linux6.1.20-1DEBIAN-CVE-2023-53423
Debian:14linux6.1.20-1DEBIAN-CVE-2023-53423
Ubuntu:22.04:LTSlinux5.15.0-79.86UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-aws5.15.0-1042.47UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-azure5.15.0-1045.52UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1045.52.1UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-gcp5.15.0-1039.47UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-gke5.15.0-1039.44UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1025.30UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-ibm5.15.0-1035.38UBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1037.42UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-kvm5.15.0-1039.44UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-79.88UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1030.30UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1016.16UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1002.2UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-oracle5.15.0-1040.46UBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-raspi5.15.0-1035.38UBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53423
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-53423
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1025.29UBUNTU-CVE-2023-53423

Affected products (as reported)

VendorProductVersions
Linux Linux 1e7e47883830aae5e8246a22ca2fc6883c61acdf – before a1368eaea058e451d20ea99ca27e72d9df0d16dd1e7e47883830aae5e8246a22ca2fc6883c61acdf – before 3a75866a5ceff5d4fdd5471e06c4c4d03e0298b31e7e47883830aae5e8246a22ca2fc6883c61acdf – before a8f63d747bf7c983882a5ea7456a5f84ad3acad51e7e47883830aae5e8246a22ca2fc6883c61acdf – before d131718d9c45d559951f57c4b88209ca407433c41e7e47883830aae5e8246a22ca2fc6883c61acdf – before 3da73f102309fe29150e5c35acd20dd82063ff67
Linux Linux 5.10

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

References