CVE-2026-90056

net: fec: only stop PTP if it was initialized

Published Sep 17, 2026 CVSS n/a EPSS < 1% KEV · Not listed

Description

In the Linux kernel, the following vulnerability has been resolved:

net: fec: only stop PTP if it was initialized

fec_ptp_init() is only called when fep->bufdesc_ex is available.
However, fec_probe() unconditionally calls fec_ptp_stop() on the
failed_init path, and fec_drv_remove() unconditionally calls
fec_ptp_stop() during device removal.

Check fep->bufdesc_ex before calling fec_ptp_stop() in both paths
to avoid stopping PTP when it was not initialized.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< 0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< 1973f108c481fab9bdc7daa6c77442af4a7388ab
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< 0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< 7566789664813c1778f0d4b7e0539fd863ea450c
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< 383f699a86fd04458dc47d10578c17e94f63d92f
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< 1f9639caeece703012bdb23975ebedf70f426269
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< 5975009651c4e5ec1492612962d0dd3dc86f6bda
`32cba57ba74be58589aeb4cb6496183e46a5e3e5`	affected	< dd890ae29299636fb037276fc1b5238698d08b03
`9561b28349a22c808c3ce25eaed4d132104bafb7`	affected	—
`3.18.99`	affected	< 3.19

Linux

affected

Version	Status	Constraints
`4.2`	affected	—
`0`	unaffected	< 4.2
`5.10.270`	unaffected	≤ 5.10.*
`5.15.221`	unaffected	≤ 5.15.*
`6.1.188`	unaffected	≤ 6.1.*
`6.6.157`	unaffected	≤ 6.6.*
`6.12.110`	unaffected	≤ 6.12.*
`6.18.52`	unaffected	≤ 6.18.*
`7.2.6`	unaffected	≤ 7.2.*
`7.3`	unaffected	≤ *

No data.

Vendor Product Versions

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b)`	affected	code_commit	—
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,1973f108c481fab9bdc7daa6c77442af4a7388ab)`	affected	code_commit	—
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac)`	affected	code_commit	—
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,7566789664813c1778f0d4b7e0539fd863ea450c)`	affected	code_commit	—
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,383f699a86fd04458dc47d10578c17e94f63d92f)`	affected	code_commit	—
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,1f9639caeece703012bdb23975ebedf70f426269)`	affected	code_commit	—
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,5975009651c4e5ec1492612962d0dd3dc86f6bda)`	affected	code_commit	—
`[32cba57ba74be58589aeb4cb6496183e46a5e3e5,dd890ae29299636fb037276fc1b5238698d08b03)`	affected	code_commit	—
`9561b28349a22c808c3ce25eaed4d132104bafb7`	affected	code_commit	—
`[3.18.99,3.19)`	affected	semver	—

Linux

Linux Kernel

Version	Status	Scheme	Platform
`4.2`	affected	generic	—
`[0,4.2)`	unaffected	generic	—
`[5.10.270,5.10.*]`	unaffected	semver	—
`[5.15.221,5.15.*]`	unaffected	semver	—
`[6.1.188,6.1.*]`	unaffected	semver	—
`[6.6.157,6.6.*]`	unaffected	semver	—
`[6.12.110,6.12.*]`	unaffected	semver	—
`[6.18.52,6.18.*]`	unaffected	semver	—
`[7.2.6,7.2.*]`	unaffected	semver	—
`[7.3-rc1,*]`	unaffected	semver	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Debian DLA	DLA-4817-1	linux-6.12 security update
Debian DLA	DLA-4841-1	linux security update
Debian DSA	DSA-6528-1	linux security update
Ubuntu USN	USN-8961-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9019-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9020-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9022-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9023-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9024-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9025-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9026-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9029-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-9039-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-9040-1	Linux kernel (Low Latency NVIDIA) vulnerabilities
Ubuntu USN	USN-9066-1	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-9091-1	Linux kernel (NVIDIA Tegra) vulnerabilities

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.216% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac
https://git.kernel.org/stable/c/0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b
https://git.kernel.org/stable/c/1973f108c481fab9bdc7daa6c77442af4a7388ab
https://git.kernel.org/stable/c/1f9639caeece703012bdb23975ebedf70f426269
https://git.kernel.org/stable/c/383f699a86fd04458dc47d10578c17e94f63d92f
https://git.kernel.org/stable/c/5975009651c4e5ec1492612962d0dd3dc86f6bda
https://git.kernel.org/stable/c/7566789664813c1778f0d4b7e0539fd863ea450c
https://git.kernel.org/stable/c/dd890ae29299636fb037276fc1b5238698d08b03

History

Sep 20, 2026 6:15 AM Weaknesses updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-665

Sep 17, 2026 4:30 PM Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references View changes

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: net: fec: only stop PTP if it was initialized fec_ptp_init() is only called when fep->bufdesc_ex is available. However, fec_probe() unconditionally calls fec_ptp_stop() on the failed_init path, and fec_drv_remove() unconditionally calls fec_ptp_stop() during device removal. Check fep->bufdesc_ex before calling fec_ptp_stop() in both paths to avoid stopping PTP when it was not initialized.
Title		net: fec: only stop PTP if it was initialized
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac https://git.kernel.org/stable/c/0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b https://git.kernel.org/stable/c/1973f108c481fab9bdc7daa6c77442af4a7388ab https://git.kernel.org/stable/c/1f9639caeece703012bdb23975ebedf70f426269 https://git.kernel.org/stable/c/383f699a86fd04458dc47d10578c17e94f63d92f https://git.kernel.org/stable/c/5975009651c4e5ec1492612962d0dd3dc86f6bda https://git.kernel.org/stable/c/7566789664813c1778f0d4b7e0539fd863ea450c https://git.kernel.org/stable/c/dd890ae29299636fb037276fc1b5238698d08b03