CVE-2024-41005 (GCVE-0-2024-41005)
Vulnerability from cvelistv5
Published
2024-07-12 12:44
Modified
2026-01-05 10:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netpoll: Fix race condition in netpoll_owner_active KCSAN detected a race condition in netpoll: BUG: KCSAN: data-race in net_rx_action / netpoll_send_skb write (marked) to 0xffff8881164168b0 of 4 bytes by interrupt on cpu 10: net_rx_action (./include/linux/netpoll.h:90 net/core/dev.c:6712 net/core/dev.c:6822) <snip> read to 0xffff8881164168b0 of 4 bytes by task 1 on cpu 2: netpoll_send_skb (net/core/netpoll.c:319 net/core/netpoll.c:345 net/core/netpoll.c:393) netpoll_send_udp (net/core/netpoll.c:?) <snip> value changed: 0x0000000a -> 0xffffffff This happens because netpoll_owner_active() needs to check if the current CPU is the owner of the lock, touching napi->poll_owner non atomically. The ->poll_owner field contains the current CPU holding the lock. Use an atomic read to check if the poll owner is the current CPU.
References
Impacted products
Vendor Product Version
Linux Linux Version: 89c4b442b78bdba388337cc746fe63caba85f46c
Version: 89c4b442b78bdba388337cc746fe63caba85f46c
Version: 89c4b442b78bdba388337cc746fe63caba85f46c
Version: 89c4b442b78bdba388337cc746fe63caba85f46c
Version: 89c4b442b78bdba388337cc746fe63caba85f46c
Version: 89c4b442b78bdba388337cc746fe63caba85f46c
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