CVE-2026-90056

net: fec: only stop PTP if it was initialized

N/A
Published: September 17, 2026 at 04:05 PM UTC
Updated: October 19, 2026 at 09:18 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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

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

3.18.9932cba57ba74be58589aeb4cb6496183e46a5e3e54.29561b28349a22c808c3ce25eaed4d132104bafb7
Vendor states this is fixed in 0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac (fixed)
Vendor states this is fixed in 0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b (fixed)
Vendor states this is fixed in 1973f108c481fab9bdc7daa6c77442af4a7388ab (fixed)
Vendor states this is fixed in 1f9639caeece703012bdb23975ebedf70f426269 (fixed)
Vendor states this is fixed in 383f699a86fd04458dc47d10578c17e94f63d92f (fixed)
Vendor states this is fixed in 5975009651c4e5ec1492612962d0dd3dc86f6bda (fixed)
Vendor states this is fixed in 7566789664813c1778f0d4b7e0539fd863ea450c (fixed)
Vendor states this is fixed in dd890ae29299636fb037276fc1b5238698d08b03 (fixed)
Affected range stops below 3.19, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 4.2 (unaffected)
Vendor states this is fixed in 5.10.270 (unaffected)
Vendor states this is fixed in 5.15.221 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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