CVE-2026-90056

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.

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