bpf: Fix a potential use-after-free#6884
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kernel-patches-daemon-bpf-rc[bot] wants to merge 1 commit intobpf-next_basefrom
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bpf: Fix a potential use-after-free#6884kernel-patches-daemon-bpf-rc[bot] wants to merge 1 commit intobpf-next_basefrom
kernel-patches-daemon-bpf-rc[bot] wants to merge 1 commit intobpf-next_basefrom
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Refcounting in the check_pseudo_btf_id() function is incorrect: the __check_pseudo_btf_id() function might get called with a zero refcounted btf. Fix this, and patch related code accordingly. Reported-by: syzbot+5a0f1995634f7c1dadbf@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=5a0f1995634f7c1dadbf Fixes: 76145f7 ("bpf: Refactor check_pseudo_btf_id") Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
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Upstream branch: db975de |
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Pull request for series with
subject: bpf: Fix a potential use-after-free
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1051977