Stanislav Fomichev d1a1ad49b1 bpf: Don't leak memory in bpf getsockopt when optlen == 0 ... commit 4be34f3d0731b38a1b24566b37fbb39500aaf3a2 upstream. optlen == 0 indicates that the kernel should ignore BPF buffer and use the original one from the user. We, however, forget to free the temporary buffer that we've allocated for BPF. Fixes: d8fe449a9c51 ("bpf: Don't return EINVAL from {get,set}sockopt when optlen > PAGE_SIZE") Reported-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20210112162829.775079-1-sdf@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-04-12 12:51:29 +08:00
..
Makefile	bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE	2021-03-16 16:40:48 +08:00
arraymap.c	bpf: Fix bug in mmap() implementation for BPF array map	2021-03-16 16:43:59 +08:00
bpf_lru_list.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
bpf_lru_list.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
btf.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
cgroup.c	bpf: Don't leak memory in bpf getsockopt when optlen == 0	2021-04-12 12:51:29 +08:00
core.c	merge bpf_jiffies64 api from 5576b991e9c1a11d2cc21c4b94fc75ec27603896	2021-03-16 16:43:59 +08:00
cpumap.c	cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled	2021-03-16 16:27:10 +08:00
devmap.c	devmap: Use bpf_map_area_alloc() for allocating hash buckets	2021-03-16 16:30:57 +08:00
disasm.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
disasm.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
hashtab.c	bpf: Zero-fill re-used per-cpu map element	2021-03-16 16:40:49 +08:00
helpers.c	bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback	2021-03-16 16:44:00 +08:00
inode.c	bpf: Convert bpf_prog refcnt to atomic64_t	2021-03-16 16:43:58 +08:00
local_storage.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
lpm_trie.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
map_in_map.c	bpf: Switch bpf_map ref counter to atomic64_t so bpf_map_inc() never fails	2021-03-16 16:43:58 +08:00
map_in_map.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
offload.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
percpu_freelist.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
percpu_freelist.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
queue_stack_maps.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
reuseport_array.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
stackmap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
syscall.c	bpf: Prevent mmap()'ing read-only maps as writable	2021-03-16 16:43:59 +08:00
sysfs_btf.c	bpf: Fix sysfs export of empty BTF section	2021-03-16 16:37:55 +08:00
tnum.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
verifier.c	merge bpf_jiffies64 api from 5576b991e9c1a11d2cc21c4b94fc75ec27603896	2021-03-16 16:43:59 +08:00
xskmap.c	bpf: Switch bpf_map ref counter to atomic64_t so bpf_map_inc() never fails	2021-03-16 16:43:58 +08:00