CVE-2026-43372

net: dsa: microchip: Fix error path in PTP IRQ setup

MEDIUM
5.5
CVSS Score
Published: May 8, 2026 at 02:21 PM UTC
Updated: June 17, 2026 at 10:49 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: microchip: Fix error path in PTP IRQ setup If request_threaded_irq() fails during the PTP message IRQ setup, the newly created IRQ mapping is never disposed. Indeed, the ksz_ptp_irq_setup()'s error path only frees the mappings that were successfully set up. Dispose the newly created mapping if the associated request_threaded_irq() fails at setup.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≥ 6.17.116.12.61 ≤ v < 6.12.786.17.11 ≤ v < 6.186.18 ≤ v < 6.18.196.18 ≤ v < 6.19.96.18 ≤ v < 7.06.18.1 ≤ v < 6.18.196.19 ≤ v < 6.19.96.6.119 ≤ v < 6.6.1301ba6da6ca3db76f6a39004fd33a9c990e428515e3b5a6115d6ea45df1ea65dc9b832b23db5d593ba6.12.616.17.116.186.6.1197.0 rc17.0 rc27.0 rc3ae12e4e0ca231475bcef841c6a6722fa185fd520d0b8fec8ae50525b57139393d0bb1f446e82ff7e
Vendor states this is fixed in 3704ac6a0d9a78f66a187515a8ca3faedaf01cc5 (fixed)
Vendor states this is fixed in 6c58a9fdb0d0e1011aa02455d26d6ebea251979b (fixed)
Vendor states this is fixed in 99c8c16a4aad0b37293cae213e15957c573cf79b (fixed)
Vendor states this is fixed in c2d1d41e0e8ec447d40a5752844fc5fb0b23db27 (fixed)
Vendor states this is fixed in e80fef36c676c947072dabeb5803ae59d92ba493 (fixed)
Vendor states this is fixed in 6.12.78 (unaffected)
Vendor states this is fixed in 6.18 (unaffected)
Vendor states this is fixed in 6.18.19 (unaffected)
Vendor states this is fixed in 6.19.9 (unaffected)
Vendor states this is fixed in 6.6.130 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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