[bluez/bluez] c53a16: emulator: bthost: don't crash on ecred_conn_req wi...

[bluez/bluez] c53a16: emulator: bthost: don't crash on ecred_conn_req wi...

[Pauli Virtanen]

  Branch: refs/heads/master
  Home:   https://github.com/bluez/bluez
  Commit: c53a16afa33dc1afc0b1c5540191a563c4b4a8ec
      https://github.com/bluez/bluez/commit/c53a16afa33dc1afc0b1c5540191a563c4b4a8ec
  Author: Pauli Virtanen <pav@iki.fi>
  Date:   2026-08-31 (Mon, 31 Aug 2026)

  Changed paths:
    M emulator/bthost.c

  Log Message:
  -----------
  emulator: bthost: don't crash on ecred_conn_req with too many scid

l2cap_ecred_conn_req() crashes if the request contains more SCID than
specification allows (5).

Respond 0x000C - All connections refused – invalid parameters to such
invalid requests.


  Commit: 0b66bd5335d068e4ec11333a36768fc7f4e9f871
      https://github.com/bluez/bluez/commit/0b66bd5335d068e4ec11333a36768fc7f4e9f871
  Author: Pauli Virtanen <pav@iki.fi>
  Date:   2026-08-31 (Mon, 31 Aug 2026)

  Changed paths:
    M tools/l2cap-tester.c

  Log Message:
  -----------
  tools/l2cap-tester: add test for too many ECRED deferred sockets

Add test tries to trigger connection with 5+1 ECRED channels, and
require the last connect() shall fail with -EPROTO.  On some kernels
this causes invalid ECRED REQ be sent with 6 SCID, and stack overwrite.

L2CAP Ext-Flowctl Client - Defer limit


  Commit: d52d9a173a5fd0bec9e38bbfba29da622792a1b9
      https://github.com/bluez/bluez/commit/d52d9a173a5fd0bec9e38bbfba29da622792a1b9
  Author: Pauli Virtanen <pav@iki.fi>
  Date:   2026-08-31 (Mon, 31 Aug 2026)

  Changed paths:
    M emulator/bthost.c
    M emulator/bthost.h

  Log Message:
  -----------
  emulator: bthost: add function for sending raw L2CAP sig commands

Add bthost_l2cap_sig_raw() that tests can use to send raw L2CAP
signaling commands.


  Commit: 3a2d543c4c21d9c1dab246d46d76a11996a69bf2
      https://github.com/bluez/bluez/commit/3a2d543c4c21d9c1dab246d46d76a11996a69bf2
  Author: Pauli Virtanen <pav@iki.fi>
  Date:   2026-08-31 (Mon, 31 Aug 2026)

  Changed paths:
    M tools/l2cap-tester.c

  Log Message:
  -----------
  tools/l2cap-server: add test for invalid Conn Req on Ext-Flowctl server

Add test that checks Ext-Flowctl server handles invalid connection
requests with ident collisions. This triggers null-deref crash / hang on
some kernel versions.

L2CAP Ext-Flowctl Server - Nval Conn Req


Compare: https://github.com/bluez/bluez/compare/e8141342284b...3a2d543c4c21

To unsubscribe from these emails, change your notification settings at https://github.com/bluez/bluez/settings/notifications