From 78004e9a87f240df03e2f73120d291763c32e0a7 Mon Sep 17 00:00:00 2001 From: Ali Ahmet Memis Date: Fri, 21 Aug 2026 01:45:27 +0000 Subject: openrisc: fix arbitrary kernel memory access via or1k_atomic syscall sys_or1k_atomic() (syscall 244 in the "or1k" ABI) takes two user pointers, v1 and v2, and swaps the words they point to in hand-written assembly. l.lwz r29,0(r4) l.lwz r27,0(r5) l.sw 0(r4),r27 l.sw 0(r5),r29 The pointers are not checked with access_ok(). The four memory accesses also have no exception table entries. A caller passes a kernel address as either pointer, and the syscall reads from and writes to it directly. This gives an unprivileged process a kernel read/write primitive. It overwrites kernel data such as the sys_call_table, gaining code execution in kernel context. Check both pointers before entering the critical section. Add fixups for the four memory accesses so faults on valid but unmapped user addresses return -EFAULT. [shorne@gmail.com: fix comment style] Fixes: 9d02a4283e9c ("OpenRISC: Boot code") Cc: stable@vger.kernel.org Signed-off-by: Ali Ahmet Memis Signed-off-by: Stafford Horne --- net/devlink/netlink_gen.h | 152 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 152 insertions(+) create mode 100644 net/devlink/netlink_gen.h (limited to 'net/devlink/netlink_gen.h') diff --git a/net/devlink/netlink_gen.h b/net/devlink/netlink_gen.h new file mode 100644 index 000000000..20034b092 --- /dev/null +++ b/net/devlink/netlink_gen.h @@ -0,0 +1,152 @@ +/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */ +/* Do not edit directly, auto-generated from: */ +/* Documentation/netlink/specs/devlink.yaml */ +/* YNL-GEN kernel header */ +/* To regenerate run: tools/net/ynl/ynl-regen.sh */ + +#ifndef _LINUX_DEVLINK_GEN_H +#define _LINUX_DEVLINK_GEN_H + +#include +#include + +#include + +/* Common nested types */ +extern const struct nla_policy devlink_dl_port_function_nl_policy[DEVLINK_PORT_FN_ATTR_CAPS + 1]; +extern const struct nla_policy devlink_dl_rate_tc_bws_nl_policy[DEVLINK_RATE_TC_ATTR_BW + 1]; +extern const struct nla_policy devlink_dl_selftest_id_nl_policy[DEVLINK_ATTR_SELFTEST_ID_FLASH + 1]; + +/* Ops table for devlink */ +extern const struct genl_split_ops devlink_nl_ops[75]; + +int devlink_nl_pre_doit(const struct genl_split_ops *ops, struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_pre_doit_port(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info); +int devlink_nl_pre_doit_port_optional(const struct genl_split_ops *ops, + struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_pre_doit_dev_lock(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info); +void +devlink_nl_post_doit(const struct genl_split_ops *ops, struct sk_buff *skb, + struct genl_info *info); +void +devlink_nl_post_doit_dev_lock(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info); + +int devlink_nl_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb); +int devlink_nl_port_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_port_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_port_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_port_new_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_port_del_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_port_split_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_port_unsplit_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_sb_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_sb_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb); +int devlink_nl_sb_pool_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_sb_pool_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_sb_pool_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_sb_port_pool_get_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_sb_port_pool_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_sb_port_pool_set_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_sb_tc_pool_bind_get_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_sb_tc_pool_bind_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_sb_tc_pool_bind_set_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_sb_occ_snapshot_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_sb_occ_max_clear_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_eswitch_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_eswitch_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_dpipe_table_get_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_dpipe_entries_get_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_dpipe_headers_get_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_dpipe_table_counters_set_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_resource_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_resource_dump_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_resource_dump_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_reload_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_param_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_param_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_param_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_region_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_region_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_region_new_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_region_del_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_region_read_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_port_param_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_port_param_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_port_param_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_info_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_info_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_health_reporter_get_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_health_reporter_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_health_reporter_set_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_health_reporter_recover_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_health_reporter_diagnose_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_health_reporter_dump_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_health_reporter_dump_clear_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_flash_update_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_trap_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_trap_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_trap_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_trap_group_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_trap_group_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_trap_group_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_trap_policer_get_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_trap_policer_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_trap_policer_set_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_health_reporter_test_doit(struct sk_buff *skb, + struct genl_info *info); +int devlink_nl_rate_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_rate_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_rate_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_rate_new_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_rate_del_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_linecard_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_linecard_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_linecard_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_selftests_get_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_selftests_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); +int devlink_nl_selftests_run_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_notify_filter_set_doit(struct sk_buff *skb, + struct genl_info *info); + +#endif /* _LINUX_DEVLINK_GEN_H */ -- cgit v1.3.1