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27 lines
2.4 KiB
Markdown
27 lines
2.4 KiB
Markdown
### [CVE-2024-56694](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56694)
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### Description
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In the Linux kernel, the following vulnerability has been resolved:bpf: fix recursive lock when verdict program return SK_PASSWhen the stream_verdict program returns SK_PASS, it places the received skbinto its own receive queue, but a recursive lock eventually occurs, leadingto an operating system deadlock. This issue has been present since v6.9.'''sk_psock_strp_data_ready write_lock_bh(&sk->sk_callback_lock) strp_data_ready strp_read_sock read_sock -> tcp_read_sock strp_recv cb.rcv_msg -> sk_psock_strp_read # now stream_verdict return SK_PASS without peer sock assign __SK_PASS = sk_psock_map_verd(SK_PASS, NULL) sk_psock_verdict_apply sk_psock_skb_ingress_self sk_psock_skb_ingress_enqueue sk_psock_data_ready read_lock_bh(&sk->sk_callback_lock) <= dead lock'''This topic has been discussed before, but it has not been fixed.Previous discussion:https://lore.kernel.org/all/6684a5864ec86_403d20898@john.notmuch
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### POC
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#### Reference
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No PoCs from references.
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#### Github
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- https://github.com/cku-heise/euvd-api-doc
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- https://github.com/fkie-cad/nvd-json-data-feeds
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- https://github.com/w4zu/Debian_security
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