lkml.org 
[lkml]   [2022]   [Aug]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.10 031/158] bpf: Check the validity of max_rdwr_access for sock local storage map iterator
    Date
    From: Hou Tao <houtao1@huawei.com>

    commit 52bd05eb7c88e1ad8541a48873188ccebca9da26 upstream.

    The value of sock local storage map is writable in map iterator, so check
    max_rdwr_access instead of max_rdonly_access.

    Fixes: 5ce6e77c7edf ("bpf: Implement bpf iterator for sock local storage map")
    Signed-off-by: Hou Tao <houtao1@huawei.com>
    Acked-by: Yonghong Song <yhs@fb.com>
    Acked-by: Martin KaFai Lau <kafai@fb.com>
    Link: https://lore.kernel.org/r/20220810080538.1845898-6-houtao@huaweicloud.com
    Signed-off-by: Alexei Starovoitov <ast@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/core/bpf_sk_storage.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/net/core/bpf_sk_storage.c
    +++ b/net/core/bpf_sk_storage.c
    @@ -823,7 +823,7 @@ static int bpf_iter_attach_map(struct bp
    if (map->map_type != BPF_MAP_TYPE_SK_STORAGE)
    goto put_map;

    - if (prog->aux->max_rdonly_access > map->value_size) {
    + if (prog->aux->max_rdwr_access > map->value_size) {
    err = -EACCES;
    goto put_map;
    }

    \
     
     \ /
      Last update: 2022-08-23 14:08    [W:8.920 / U:0.024 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site