CVE-2025-38617 - Linux Kernel Packet Netdev Up Event Race Condition

CVE-2025-38617 - Linux Kernel Packet Netdev Up Event Race Condition

https://cvefeed.io/rssfeed/latest.atom / Fri, 08/22/2025 - 17:35
CVE ID : CVE-2025-38617
Published : Aug. 22, 2025, 2:15 p.m. | 51 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: net/packet: fix a race in packet_set_ring() and packet_notifier() When packet_set_ring() releases po->bind_lock, another thread can run packet_notifier() and process an NETDEV_UP event. This race and the fix are both similar to that of commit 15fe076edea7 ("net/packet: fix a race in packet_bind() and packet_notifier()"). There too the packet_notifier NETDEV_UP event managed to run while a po->bind_lock critical section had to be temporarily released. And the fix was similarly to temporarily set po->num to zero to keep the socket unhooked until the lock is retaken. The po->bind_lock in packet_set_ring and packet_notifier precede the introduction of git history.
Severity: 0.0 | NA
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