CVE-2025-37920High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: xsk: Fix race condition in AF_XDP generic RX path Move rx_lock from xsk_socket to xsk_buff_pool. Fix synchronization for shared umem mode in generic RX path where mult…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
0.2% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
xsk: Fix race condition in AF_XDP generic RX path
Move rx_lock from xsk_socket to xsk_buff_pool. Fix synchronization for shared umem mode in generic RX path where multiple sockets share single xsk_buff_pool.
RX queue is exclusive to xsk_socket, while FILL queue can be shared between multiple sockets. This could result in race condition where two CPU cores access RX path of two different sockets sharing the same umem.
Protect both queues by acquiring spinlock in shared xsk_buff_pool.
Lock contention may be minimized in the future by some per-thread FQ buffering.
It's safe and necessary to move spin_lock_bh(rx_lock) after xsk_rcv_check():
linux_kernel >= 5.1.20, < 5.2linux_kernel >= 5.2.3, < 6.12.28linux_kernel >= 6.13, < 6.14.6linux_kernel = 6.15Upgrade past the affected range:
linux_kernel 6.14.6Connected by shared product, vendor, weakness, or advisory.
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