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| author |   Pu Lehui <pulehui@huawei.com> | 2022-11-02 16:40:34 +0800 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2022-11-02 12:05:42 +0100 |
| commit | 34de8e6e0e1f66e431abf4123934a2581cb5f133 (patch) | |
| tree | 23eb3b181ecd27dc5e82f84abc76bd8316c40df8 /lib/pm-notifier-error-inject.c | |
| parent | bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues (diff) | |
| download | linux-rng-34de8e6e0e1f66e431abf4123934a2581cb5f133.tar.xz linux-rng-34de8e6e0e1f66e431abf4123934a2581cb5f133.zip | |
bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE
When using bpftool to pin {PROG, MAP, LINK} without FILE,
segmentation fault will occur. The reson is that the lack
of FILE will cause strlen to trigger NULL pointer dereference.
The corresponding stacktrace is shown below:
do_pin
do_pin_any
do_pin_fd
mount_bpffs_for_pin
strlen(name) <- NULL pointer dereference
Fix it by adding validation to the common process.
Fixes: 75a1e792c335 ("tools: bpftool: Allow all prog/map handles for pinning objects")
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20221102084034.3342995-1-pulehui@huaweicloud.com
Diffstat (limited to 'lib/pm-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions