Description
In the Linux kernel, the following vulnerability has been resolved: bonding: Fix unnecessary warnings and logs from bond_xdp_get_xmit_slave() syzbot reported a WARNING in bond_xdp_get_xmit_slave. To reproduce this[1], one bond device (bond1) has xdpdrv, which increases bpf_master_redirect_enabled_key. Another bond device (bond0) which is unsupported by XDP but its slave (veth3) has xdpgeneric that returns XDP_TX. This triggers WARN_ON_ONCE() from the xdp_master_redirect(). To reduce unnecessary warnings and improve log management, we need to delete the WARN_ON_ONCE() and add ratelimit to the netdev_err(). [1] Steps to reproduce: # Needs tx_xdp with return XDP_TX; ip l add veth0 type veth peer veth1 ip l add veth3 type veth peer veth4 ip l add bond0 type bond mode 6 # BOND_MODE_ALB, unsupported by XDP ip l add bond1 type bond # BOND_MODE_ROUNDROBIN by default ip l set veth0 master bond1 ip l set bond1 up # Increases bpf_master_redirect_enabled_key ip l set dev bond1 xdpdrv object tx_xdp.o section xdp_tx ip l set veth3 master bond0 ip l set bond0 up ip l set veth4 up # Triggers WARN_ON_ONCE() from the xdp_master_redirect() ip l set veth3 xdpgeneric object tx_xdp.o section xdp_tx
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e to < c1be35e774f8ed415e01209fddd963c5a74e8e9faffected9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e to < 6b64197b4bf1a5703a8b105367baf20f1e627a75affected9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e to < ccd3e6ff05e5236d1b9535f23f3e6622e0bb32b8affected9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e to < 72e2c0825a480e19ee999cee9d018850d38c82b9affected9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e to < 57b5fba55c6f8b1d83312a34bd656166fcd95658affected9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e to < 0cbfd45fbcf0cb26d85c981b91c62fe73cdee01caffected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected5.15.168 to ≤ 5.15.*unaffected6.1.113 to ≤ 6.1.*unaffected6.6.54 to ≤ 6.6.*unaffected6.10.13 to ≤ 6.10.*unaffected6.11.2 to ≤ 6.11.*unaffected6.12 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c1be35e774f8ed415e01209fddd963c5a74e8e9f ↗
- https://git.kernel.org/stable/c/6b64197b4bf1a5703a8b105367baf20f1e627a75 ↗
- https://git.kernel.org/stable/c/ccd3e6ff05e5236d1b9535f23f3e6622e0bb32b8 ↗
- https://git.kernel.org/stable/c/72e2c0825a480e19ee999cee9d018850d38c82b9 ↗
- https://git.kernel.org/stable/c/57b5fba55c6f8b1d83312a34bd656166fcd95658 ↗
- https://git.kernel.org/stable/c/0cbfd45fbcf0cb26d85c981b91c62fe73cdee01c ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗