CVE-2021-46930

Summary

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

usb: mtu3: fix list_head check warning

This is caused by uninitialization of list_head.

BUG: KASAN: use-after-free in __list_del_entry_valid+0x34/0xe4

Call trace: dump_backtrace+0x0/0x298 show_stack+0x24/0x34 dump_stack+0x130/0x1a8 print_address_description+0x88/0x56c __kasan_report+0x1b8/0x2a0 kasan_report+0x14/0x20 __asan_load8+0x9c/0xa0 __list_del_entry_valid+0x34/0xe4 mtu3_req_complete+0x4c/0x300 [mtu3] mtu3_gadget_stop+0x168/0x448 [mtu3] usb_gadget_unregister_driver+0x204/0x3a0 unregister_gadget_item+0x44/0xa4

Affected Software

VendorProductVersion RangeStatus
LinuxLinux83374e035b6286731c5aa617844c7b724294c2a7 < 585e2b244dda7ea733274e4b8fa27853d625d3bfaffected
LinuxLinux83374e035b6286731c5aa617844c7b724294c2a7 < 3b6efe0b7ba03cc2acf0694b46d6ff33c5b4c295affected
LinuxLinux83374e035b6286731c5aa617844c7b724294c2a7 < 249ddfbe00570d6dc76208e88017937d4d374c79affected
LinuxLinux83374e035b6286731c5aa617844c7b724294c2a7 < 8c313e3bfd9adae8d5c4ba1cc696dcbc86fbf9bfaffected
LinuxLinux5.2affected
LinuxLinux0 < 5.2unaffected
LinuxLinux5.4.170 <= 5.4.*unaffected
LinuxLinux5.10.90 <= 5.10.*unaffected
LinuxLinux5.15.13 <= 5.15.*unaffected
LinuxLinux5.16 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References