android_kernel_motorola_sm6375/kernel/bpf
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Lee Jones 215c146b40 bpf: Ensure correct locking around vulnerable function find_vpid()
[ Upstream commit 83c10cc362d91c0d8d25e60779ee52fdbbf3894d ]

The documentation for find_vpid() clearly states:

  "Must be called with the tasklist_lock or rcu_read_lock() held."

Presently we do neither for find_vpid() instance in bpf_task_fd_query().
Add proper rcu_read_lock/unlock() to fix the issue.

Fixes: 41bdc4b40e ("bpf: introduce bpf subcommand BPF_TASK_FD_QUERY")
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220912133855.1218900-1-lee@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-10-26 13:22:24 +02:00
..
arraymap.c
bpf_lru_list.c bpf_lru_list: Read double-checked variable once without lock 2021-03-04 10:26:16 +01:00
bpf_lru_list.h
btf.c bpf: btf: fix truncated last_member_type_id in btf_struct_resolve 2022-10-26 13:22:24 +02:00
cgroup.c bpf, cgroup: Fix problematic bounds check 2021-02-10 09:25:27 +01:00
core.c bpf: Make sure mac_header was set before using it 2022-07-29 17:14:16 +02:00
cpumap.c
devmap.c bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc 2021-12-17 10:12:24 +01:00
disasm.c bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2021-09-15 09:47:38 +02:00
disasm.h
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
local_storage.c
lpm_trie.c
Makefile bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE 2020-11-18 19:20:26 +01:00
map_in_map.c
map_in_map.h
offload.c
percpu_freelist.c
percpu_freelist.h
queue_stack_maps.c
reuseport_array.c
stackmap.c bpf: Fix incorrect memory charge cost calculation in stack_map_alloc() 2022-06-22 14:11:02 +02:00
syscall.c bpf: Ensure correct locking around vulnerable function find_vpid() 2022-10-26 13:22:24 +02:00
sysfs_btf.c
tnum.c
verifier.c bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds() 2022-08-11 12:57:51 +02:00
xskmap.c