CVE intelligence and bounded remediation

CVE-2023-53507 — Linux Linux Kernel security vulnerability

High CVSS 7.8

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Unregister devlink params in case interface is down Currently, in case an interface is down, mlx5 driver doesn't unregister its devlink params, which leads to this WARN[1]. Fix it by unregistering devlink params in that case as well. [1] [ 295.244769 ] WARNING: CPU: 15 PID: 1 at net/core/devlink.c:9042 devlink_free+0x174/0x1fc [ 295.488379 ] CPU: 15 PID: 1 Comm: shutdown Tainted: G S OE 5.15.0-1017.19.3.g0677e61-bluefield #g0677e61 [ 295.509330 ] Hardware name: https://www.mellanox.com BlueField SoC/BlueField SoC, BIOS 4.2.0.12761 Jun 6 2023 [ 295.543096 ] pc : devlink_free+0x174/0x1fc [ 295.551104 ] lr : mlx5_devlink_free+0x18/0x2c [mlx5_core] [ 295.561816 ] sp : ffff80000809b850 [ 295.711155 ] Call trace: [ 295.716030 ] devlink_free+0x174/0x1fc [ 295.723346 ] mlx5_devlink_free+0x18/0x2c [mlx5_core] [ 295.733351 ] mlx5_sf_dev_remove+0x98/0xb0 [mlx5_core] [ 295.743534 ] auxiliary_bus_remove+0x2c/0x50 [ 295.751893 ] __device_release_driver+0x19c/0x280 [ 295.761120 ] device_release_driver+0x34/0x50 [ 295.769649 ] bus_remove_device+0xdc/0x170 [ 295.777656 ] device_del+0x17c/0x3a4 [ 295.784620 ] mlx5_sf_dev_…

Severity
High
CVSS
7.8 (3.1)
Published
2025-10-01
CISA KEV
Not currently listed
Ecosystem
linux/kernel

Affected products

  • linux / linux_kernel
  • linux / linux_kernel / 6.5

Showing 2 representative product identities from 5 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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