Daniel Borkmann 9dd6f6d896 bpf: Fix ringbuf helper function compatibility ... commit 5b029a32cfe4600f5e10e36b41778506b90fd4de upstream. Commit 457f44363a ("bpf: Implement BPF ring buffer and verifier support for it") extended check_map_func_compatibility() by enforcing map -> helper function match, but not helper -> map type match. Due to this all of the bpf_ringbuf_*() helper functions could be used with a wrong map type such as array or hash map, leading to invalid access due to type confusion. Also, both BPF_FUNC_ringbuf_{submit,discard} have ARG_PTR_TO_ALLOC_MEM as argument and not a BPF map. Therefore, their check_map_func_compatibility() presence is incorrect since it's only for map type checking. Fixes: 457f44363a ("bpf: Implement BPF ring buffer and verifier support for it") Reported-by: Ryota Shiga (Flatt Security) Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-09-03 10:09:21 +02:00
..
preload	bpf: Fix umd memory leak in copy_process()	2021-03-30 14:32:03 +02:00
arraymap.c	bpf: Allow for map-in-map with dynamic inner array map entries	2020-10-11 10:21:04 -07:00
bpf_inode_storage.c	bpf: Change inode_storage's lookup_elem return value from NULL to -EBADF	2021-03-30 14:31:56 +02:00
bpf_iter.c	bpf: Fix an unitialized value in bpf_iter	2021-03-04 11:37:33 +01:00
bpf_local_storage.c	bpf: Use hlist_add_head_rcu when linking to local_storage	2020-09-19 01:12:35 +02:00
bpf_lru_list.c	bpf_lru_list: Read double-checked variable once without lock	2021-03-04 11:37:29 +01:00
bpf_lru_list.h	bpf: Fix a typo "inacitve" -> "inactive"	2020-04-06 21:54:10 +02:00
bpf_lsm.c	bpf: Update verification logic for LSM programs	2020-11-06 13:15:21 -08:00
bpf_struct_ops_types.h
bpf_struct_ops.c	bpf: Fix fexit trampoline.	2021-04-07 15:00:03 +02:00
btf.c	bpf: Forbid trampoline attach for functions with variable arguments	2021-06-16 12:01:35 +02:00
cgroup.c	bpf, cgroup: Fix problematic bounds check	2021-02-10 09:29:12 +01:00
core.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-08-04 12:46:44 +02:00
cpumap.c	bpf, cpumap: Remove rcpu pointer from cpu_map_build_skb signature	2020-09-28 23:30:42 +02:00
devmap.c	bpf, devmap: Use GFP_KERNEL for xdp bulk queue allocation	2021-03-04 11:37:33 +01:00
disasm.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-08-04 12:46:44 +02:00
disasm.h
dispatcher.c	bpf: Remove bpf_image tree	2020-03-13 12:49:52 -07:00
hashtab.c	bpf: Fix integer overflow involving bucket_size	2021-08-18 08:59:10 +02:00
helpers.c	bpf, lockdown, audit: Fix buggy SELinux lockdown permission checks	2021-06-10 13:39:19 +02:00
inode.c	bpf: link: Refuse non-O_RDWR flags in BPF_OBJ_GET	2021-04-14 08:42:00 +02:00
local_storage.c	bpf/local_storage: Fix build without CONFIG_CGROUP	2020-07-25 20:16:36 -07:00
lpm_trie.c	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
Makefile	bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE	2020-10-29 20:01:46 -07:00
map_in_map.c	bpf: Relax max_entries check for most of the inner map types	2020-08-28 15:41:30 +02:00
map_in_map.h	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
map_iter.c	bpf: Implement link_query callbacks in map element iterators	2020-08-21 14:01:39 -07:00
net_namespace.c	bpf: Add support for forced LINK_DETACH command	2020-08-01 20:38:28 -07:00
offload.c	bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill	2020-02-17 16:53:49 +01:00
percpu_freelist.c	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
percpu_freelist.h	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
prog_iter.c	bpf: Refactor bpf_iter_reg to have separate seq_info member	2020-07-25 20:16:32 -07:00
queue_stack_maps.c	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
reuseport_array.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
ringbuf.c	bpf: Fix false positive kmemleak report in bpf_ringbuf_area_alloc()	2021-07-19 09:44:54 +02:00
stackmap.c	bpf: Refcount task stack in bpf_get_task_stack	2021-04-14 08:42:01 +02:00
syscall.c	bpf: Prevent double bpf_prog_put call from bpf_tracing_prog_attach	2021-01-27 11:55:07 +01:00
sysfs_btf.c	bpf: Fix sysfs export of empty BTF section	2020-09-21 21:50:24 +02:00
task_iter.c	bpf: Save correct stopping point in file seq iteration	2021-01-19 18:27:28 +01:00
tnum.c	bpf: Verifier, do explicit ALU32 bounds tracking	2020-03-30 14:59:53 -07:00
trampoline.c	bpf: Fix fexit trampoline.	2021-04-07 15:00:03 +02:00
verifier.c	bpf: Fix ringbuf helper function compatibility	2021-09-03 10:09:21 +02:00