Hello:
This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Thu, 17 Feb 2022 10:30:01 -0800 you wrote:
> bpf_prog_pack_free() uses header->size to decide whether the header
> should be freed with module_memfree() or the bpf_prog_pack logic.
> However, in kvmalloc() failure path of bpf_jit_binary_pack_alloc(),
> header->size is not set yet. As a result, bpf_prog_pack_free() may treat
> a slice of a pack as a standalone kvmalloc'd header and call
> module_memfree() on the whole pack. This in turn causes use-after-free by
> other users of the pack.
>
> [...]
Here is the summary with links:
- [bpf-next] bpf: bpf_prog_pack: set proper size before freeing ro_header
https://git.kernel.org/bpf/bpf-next/c/d24d2a2b0a81
You are awesome, thank you!
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