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Loris Reiff 02531b5549 bpf, cgroup: Fix problematic bounds check 
[ Upstream commit f4a2da755a7e1f5d845c52aee71336cee289935a ]

Since ctx.optlen is signed, a larger value than max_value could be
passed, as it is later on used as unsigned, which causes a WARN_ON_ONCE
in the copy_to_user.

Fixes: 0d01da6afc54 ("bpf: implement getsockopt and setsockopt hooks")
Signed-off-by: Loris Reiff <loris.reiff@liblor.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20210122164232.61770-2-loris.reiff@liblor.ch
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-02-10 09:25:27 +01:00
..
arraymap.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-17 20:20:36 -07:00
bpf_lru_list.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
bpf_lru_list.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
btf.c
bpf: Explicitly memset some bpf info structures declared on the stack
2020-04-02 15:11:01 +02:00
cgroup.c
bpf, cgroup: Fix problematic bounds check
2021-02-10 09:25:27 +01:00
core.c
bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
2020-11-18 19:20:26 +01:00
cpumap.c
cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled
2020-05-02 08:48:51 +02:00
devmap.c
devmap: Use bpf_map_area_alloc() for allocating hash buckets
2020-06-30 15:36:56 -04:00
disasm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295
2019-06-05 17:36:38 +02:00
disasm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295
2019-06-05 17:36:38 +02:00
hashtab.c
bpf: Zero-fill re-used per-cpu map element
2020-11-18 19:20:26 +01:00
helpers.c
bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback
2021-01-23 15:57:56 +01:00
inode.c
bpf: Fix a rcu warning for bpffs map pretty-print
2020-10-01 13:18:19 +02:00
local_storage.c
bpf: move memory size checks to bpf_map_charge_init()
2019-05-31 16:52:56 -07:00
lpm_trie.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-22 08:59:24 -04:00
Makefile
bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
2020-11-18 19:20:26 +01:00
map_in_map.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
map_in_map.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
offload.c
bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill
2020-02-28 17:22:27 +01:00
percpu_freelist.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
percpu_freelist.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
queue_stack_maps.c
bpf: move memory size checks to bpf_map_charge_init()
2019-05-31 16:52:56 -07:00
reuseport_array.c
bpf: move memory size checks to bpf_map_charge_init()
2019-05-31 16:52:56 -07:00
stackmap.c
bpf/stackmap: Fix deadlock with rq_lock in bpf_get_stack()
2019-12-31 16:44:09 +01:00
syscall.c
bpf: sockmap: Require attach_bpf_fd when detaching a program
2020-08-07 09:34:02 +02:00
sysfs_btf.c
bpf: Fix sysfs export of empty BTF section
2020-10-14 10:32:58 +02:00
tnum.c
bpf: Fix incorrect verifier simulation of ARSH under ALU32
2020-01-23 08:22:44 +01:00
verifier.c
bpf: Permit map_ptr arithmetic with opcode add and offset 0
2020-11-05 11:43:17 +01:00
xskmap.c
bpf/xskmap: Return ERR_PTR for failure case instead of NULL.
2019-09-25 22:14:16 +02:00