UNKNOWN NVD
CVE-2026-98795
In the Linux kernel, the following vulnerability has been resolved: net: sparx5: skip ptp deinit if init was skipped sparx5_ptp_init() returns early on the ba
In the Linux kernel, the following vulnerability has been resolved:
net: sparx5: skip ptp deinit if init was skipped
sparx5_ptp_init() returns early on the base lan969x variants
because they do not have the SPX5_FEATURE_PTP flag. It also returns early
when no "ptp" interrupt is described. Unbinding the driver then causes a
NULL pointer dereference when cleaning up uninitialized tx_skbs queues:
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000008
Call trace:
skb_queue_purge_reason+0x68/0x120 (P)
sparx5_ptp_deinit+0x64/0xc0
mchp_sparx5_remove+0x38/0x70
platform_remove+0x20/0x30
device_remove+0x4c/0x80
Before per-port tx_skbs were added, a NULL dereference would have happened
when calling ptp_clock_unregister() on the never-registered PTP clocks.
Fix by returning early in sparx5_ptp_deinit() if PTP is not used.
References
- https://git.kernel.org/stable/c/0d2c49915bc3aea4521cda5e4d42f24f63b94585
- https://git.kernel.org/stable/c/2879b65bfa548e10d59c5fba91d17f8a00cd7029
- https://git.kernel.org/stable/c/35c706d6eb1963735814c5f5bb2674a96eacf3cc
This unknown severity vulnerability was published on 2026-10-18 via NVD.
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