kernel/linux.git/net/bridge/netfilter, branch v7.0.11

netfilter: bridge: eb_tables: close module init race

2026-06-01T15:54:35+00:00

[ Upstream commit 27414ff1b287ea9a2a11675149ec28e05539f3cc ] sashiko reports for unrelated patch: Does the core ebtables initialization in ebtables.c suffer from a similar race? Once nf_register_sockopt() completes, the sockopts are exposed globally. sockopt has to be registered last, just like in ip/ip6/arptables. Fixes: 5b53951cfc85 ("netfilter: ebtables: use net_generic infra") Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin

netfilter: ebtables: close dangling table module init race

2026-06-01T15:54:35+00:00

[ Upstream commit 92c603fa07bc0d6a17345de3ad7954730b8de44b ] sashiko reported for a related patch: In modules like iptable_raw.c, [..], if register_pernet_subsys() fails, the rollback might call kfree(rawtable_ops) before [..] During this window, could a concurrent userspace process find the globally visible template, trigger table_init(), [..] The table init functions must always register the template last. Otherwise, set/getsockopt can instantiate a table in a namespace while the required pernet ops (contain the destructor) isn't available. This change is also required in x_tables, handled in followup change. Fixes: 87663c39f898 ("netfilter: ebtables: do not hook tables by default") Reviewed-by: Tristan Madani Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin

netfilter: ebtables: move to two-stage removal scheme

2026-06-01T15:54:35+00:00

[ Upstream commit b7f0544d86d439cb946515d2ef6a0a75e8626710 ] Like previous patches for x_tables, follow same pattern in ebtables. We can't reuse xt helpers: ebt_table struct layout is incompatible. table->ops assignment is now done while still holding the ebt mutex to make sure we never expose partially-filled table struct. Fixes: 87663c39f898 ("netfilter: ebtables: do not hook tables by default") Reviewed-by: Tristan Madani Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

net/ipv6: Introduce payload_len helpers

2026-02-07T04:50:03+00:00

The next commits will transition away from using the hop-by-hop extension header to encode packet length for BIG TCP. Add wrappers around ip6->payload_len that return the actual value if it's non-zero, and calculate it from skb->len if payload_len is set to zero (and a symmetrical setter). The new helpers are used wherever the surrounding code supports the hop-by-hop jumbo header for BIG TCP IPv6, or the corresponding IPv4 code uses skb_ip_totlen (e.g., in include/net/netfilter/nf_tables_ipv6.h). No behavioral change in this commit. Signed-off-by: Alice Mikityanska Acked-by: Paolo Abeni Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20260205133925.526371-2-alice.kernel@fastmail.im Signed-off-by: Jakub Kicinski

netfilter: don't include xt and nftables.h in unrelated subsystems

2026-01-20T15:23:37+00:00

conntrack, xtables and nftables are distinct subsystems, don't use them in other subystems. Signed-off-by: Florian Westphal

netfilter: replace -EEXIST with -EBUSY

2026-01-01T10:31:48+00:00

The -EEXIST error code is reserved by the module loading infrastructure to indicate that a module is already loaded. When a module's init function returns -EEXIST, userspace tools like kmod interpret this as "module already loaded" and treat the operation as successful, returning 0 to the user even though the module initialization actually failed. Replace -EEXIST with -EBUSY to ensure correct error reporting in the module initialization path. Affected modules: * ebtable_broute ebtable_filter ebtable_nat arptable_filter * ip6table_filter ip6table_mangle ip6table_nat ip6table_raw * ip6table_security iptable_filter iptable_mangle iptable_nat * iptable_raw iptable_security Signed-off-by: Daniel Gomez Signed-off-by: Florian Westphal

netfilter: nft_meta_bridge: introduce NFT_META_BRI_IIFHWADDR support

2025-09-11T13:40:55+00:00

Expose the input bridge interface ethernet address so it can be used to redirect the packet to the receiving physical device for processing. Tested with nft command line tool. table bridge nat { chain PREROUTING { type filter hook prerouting priority 0; policy accept; ether daddr de:ad:00:00:be:ef meta pkttype set host ether daddr set meta ibrhwdr accept } } Joint work with Pablo Neira. Signed-off-by: Fernando Fernandez Mancera Signed-off-by: Florian Westphal

netfilter: ebtables: Use vmalloc_array() to improve code

2025-09-02T13:28:17+00:00

Remove array_size() calls and replace vmalloc() with vmalloc_array() to simplify the code. vmalloc_array() is also optimized better, uses fewer instructions, and handles overflow more concisely[1]. [1]: https://lore.kernel.org/lkml/abc66ec5-85a4-47e1-9759-2f60ab111971@vivo.com/ Signed-off-by: Qianfeng Rong Signed-off-by: Florian Westphal