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| author | Stanislav Fomichev <[email protected]> | 2024-04-26 23:16:18 +0000 |
|---|---|---|
| committer | Martin KaFai Lau <[email protected]> | 2024-04-30 17:43:37 +0000 |
| commit | 543576ec15b17c0c93301ac8297333c7b6e84ac7 (patch) | |
| tree | 9ee27656356c0a9d30f53a807ef9f42a931f5c00 /net/unix/af_unix.c | |
| parent | Merge branch 'qed-error-codes' (diff) | |
| download | kernel-543576ec15b17c0c93301ac8297333c7b6e84ac7.tar.gz kernel-543576ec15b17c0c93301ac8297333c7b6e84ac7.zip | |
bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE
bpf_prog_attach uses attach_type_to_prog_type to enforce proper
attach type for BPF_PROG_TYPE_CGROUP_SKB. link_create uses
bpf_prog_get and relies on bpf_prog_attach_check_attach_type
to properly verify prog_type <> attach_type association.
Add missing attach_type enforcement for the link_create case.
Otherwise, it's currently possible to attach cgroup_skb prog
types to other cgroup hooks.
Fixes: af6eea57437a ("bpf: Implement bpf_link-based cgroup BPF program attachment")
Link: https://lore.kernel.org/bpf/[email protected]/
Reported-by: [email protected]
Signed-off-by: Stanislav Fomichev <[email protected]>
Acked-by: Eduard Zingerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin KaFai Lau <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions