Riskcovery

CVE-2024-50078

Bluetooth: Call iso_exit() on module unload

State
Published
Severity
7.8 High
Published
Oct 29, 2024
Updated
Aug 5, 2026
Reserved
Oct 21, 2024

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: Call iso_exit() on module unload

If iso_init() has been called, iso_exit() must be called on module unload. Without that, the struct proto that iso_init() registered with proto_register() becomes invalid, which could cause unpredictable problems later. In my case, with CONFIG_LIST_HARDENED and CONFIG_BUG_ON_DATA_CORRUPTION enabled, loading the module again usually triggers this BUG():

list_add corruption. next->prev should be prev (ffffffffb5355fd0), but was 0000000000000068. (next=ffffffffc0a010d0). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:29! Oops: invalid opcode: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 4159 Comm: modprobe Not tainted 6.10.11-4+bt2-ao-desktop #1 RIP: 0010:__list_add_valid_or_report+0x61/0xa0 ... __list_add_valid_or_report+0x61/0xa0 proto_register+0x299/0x320 hci_sock_init+0x16/0xc0 [bluetooth] bt_init+0x68/0xd0 [bluetooth] __pfx_bt_init+0x10/0x10 [bluetooth] do_one_initcall+0x80/0x2f0 do_init_module+0x8b/0x230 __do_sys_init_module+0x15f/0x190 do_syscall_64+0x68/0x110 ...

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • ccf74f2390d60a2f9a75ef496d2564abb478f46a to before 4af7ba39a1a02e16ee8cd0d3b6c6657f51b8ad7aAffected
  • ccf74f2390d60a2f9a75ef496d2564abb478f46a to before 05f84d86169b2ebac185c5736a256823d42c425bAffected
  • ccf74f2390d60a2f9a75ef496d2564abb478f46a to before f905a7d95091e0d2605a3a1a157a9351f09ab2e1Affected
  • ccf74f2390d60a2f9a75ef496d2564abb478f46a to before d458cd1221e9e56da3b2cc5518ad3225caa91f20Affected
LinuxLinux
  • 6.0Affected
  • before 6.0Not affected
  • 6.1.114 through 6.1.*Not affected
  • 6.6.58 through 6.6.*Not affected
  • 6.11.5 through 6.11.*Not affected
  • 6.12 and laterNot affected

References

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