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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2024-56694

bpf: fix recursive lock when verdict program return SK_PASS

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: fix recursive lock when verdict program return SK_PASS When the stream_verdict program returns SK_PASS, it places the received skb into its own receive queue, but a recursive lock eventually occurs, leading to 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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • c0809c128dad4c3413818384eb06a341633db973 to < 221109ba2127eabd0aa64718543638b58b15df56affected
  • 5965bc7535fb87510b724e5465ccc1a1cf00916d to < 6694f7acd625ed854bf6342926e771d65dad7f69affected
  • 39dc9e1442385d6e9be0b6491ee488dddd55ae27 to < 386efa339e08563dd33e83bc951aea5d407fe578affected
  • b397a0ab8582c533ec0c6b732392f141fc364f87 to < da2bc8a0c8f3ac66fdf980fc59936f851a083561affected
  • 6648e613226e18897231ab5e42ffc29e63fa3365 to < 01f1b88acfd79103da0610b45471f6c88ea98d72affected
  • 6648e613226e18897231ab5e42ffc29e63fa3365 to < f84c5ef6ca23cc2f72f3b830d74f67944684bb05affected
  • 6648e613226e18897231ab5e42ffc29e63fa3365 to < 8ca2a1eeadf09862190b2810697702d803ceef2daffected
  • 772d5729b5ff0df0d37b32db600ce635b2172f80affected
  • 5.10.223 to < 5.10.233affected
  • 5.15.159 to < 5.15.174affected
  • 6.1.91 to < 6.1.120affected
  • 6.6.31 to < 6.6.64affected
  • 6.8.10 to < 6.9affected

Linux Linux

Default version status: affected

  • 6.9affected
  • 0 to < 6.9unaffected
  • 5.10.233 to ≤ 5.10.*unaffected
  • 5.15.174 to ≤ 5.15.*unaffected
  • 6.1.120 to ≤ 6.1.*unaffected
  • 6.6.64 to ≤ 6.6.*unaffected
  • 6.11.11 to ≤ 6.11.*unaffected
  • 6.12.2 to ≤ 6.12.*unaffected
  • 6.13 to ≤ *unaffected

References