CVE-2024-47734 (GCVE-0-2024-47734)
Vulnerability from cvelistv5
Published
2024-10-21 12:14
Modified
2026-05-11 20:39
Severity ?
Summary
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
References
Impacted products
Vendor Product Version
Linux Linux Version: 9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e
Version: 9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e
Version: 9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e
Version: 9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e
Version: 9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e
Version: 9e2ee5c7e7c35d195e2aa0692a7241d47a433d1e
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: Fix unnecessary warnings and logs from bond_xdp_get_xmit_slave()\n\nsyzbot reported a WARNING in bond_xdp_get_xmit_slave. To reproduce\nthis[1], one bond device (bond1) has xdpdrv, which increases\nbpf_master_redirect_enabled_key. Another bond device (bond0) which is\nunsupported by XDP but its slave (veth3) has xdpgeneric that returns\nXDP_TX. This triggers WARN_ON_ONCE() from the xdp_master_redirect().\nTo reduce unnecessary warnings and improve log management, we need to\ndelete the WARN_ON_ONCE() and add ratelimit to the netdev_err().\n\n[1] Steps to reproduce:\n    # Needs tx_xdp with return XDP_TX;\n    ip l add veth0 type veth peer veth1\n    ip l add veth3 type veth peer veth4\n    ip l add bond0 type bond mode 6 # BOND_MODE_ALB, unsupported by XDP\n    ip l add bond1 type bond # BOND_MODE_ROUNDROBIN by default\n    ip l set veth0 master bond1\n    ip l set bond1 up\n    # Increases bpf_master_redirect_enabled_key\n    ip l set dev bond1 xdpdrv object tx_xdp.o section xdp_tx\n    ip l set veth3 master bond0\n    ip l set bond0 up\n    ip l set veth4 up\n    # Triggers WARN_ON_ONCE() from the xdp_master_redirect()\n    ip l set veth3 xdpgeneric object tx_xdp.o section xdp_tx"
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    "dateReserved": "2024-09-30T16:00:12.958Z",
    "dateUpdated": "2026-05-11T20:39:43.075Z",
    "state": "PUBLISHED"
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