CVE-2024-50078

Summary

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 …

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxccf74f2390d60a2f9a75ef496d2564abb478f46a < 4af7ba39a1a02e16ee8cd0d3b6c6657f51b8ad7aaffected
LinuxLinuxccf74f2390d60a2f9a75ef496d2564abb478f46a < 05f84d86169b2ebac185c5736a256823d42c425baffected
LinuxLinuxccf74f2390d60a2f9a75ef496d2564abb478f46a < f905a7d95091e0d2605a3a1a157a9351f09ab2e1affected
LinuxLinuxccf74f2390d60a2f9a75ef496d2564abb478f46a < d458cd1221e9e56da3b2cc5518ad3225caa91f20affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.114 <= 6.1.*unaffected
LinuxLinux6.6.58 <= 6.6.*unaffected
LinuxLinux6.11.5 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References