Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd generic_set_cmd() and generic_get_cmd() use the low nibble of ctrl->bRequest as an index into con->data[]: u8 cmd = (ctrl->bRequest & 0x0F); /* 0 .. 15 */ ... con->data[cmd] = value; /* OOB when cmd >= 5 */ struct usb_audio_control (include/linux/usb/audio.h) declares data as a 5-element array, so indices 5 through 15 write (or read) up to 44 bytes past the end of the array on the heap. A malicious USB host can craft a class-specific SET_CUR / GET_CUR request with an arbitrary bRequest value, triggering the out-of-bounds access from an IRQ completion handler with no further preconditions. Add an ARRAY_SIZE() guard to both functions.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c47d7b09891abb4f8b222317c89c7469bed8db3a before da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e; affected c47d7b09891abb4f8b222317c89c7469bed8db3a before 36f3f009049bc91e14dc856007932473318d12f8; affected c47d7b09891abb4f8b222317c89c7469bed8db3a before 8c611876c002d712ae5f246af5188432c708f79d; affected c47d7b09891abb4f8b222317c89c7469bed8db3a before 697cfe6e53b66cda196d6f8833b0ee97fefd0a8a; affected c47d7b09891abb4f8b222317c89c7469bed8db3a before 9062d50e75c24dc7911be05c9b1719b3b256af15 |
| Linux / Linux | affected 2.6.31; unaffected 0 before 2.6.31; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e
- https://git.kernel.org/stable/c/36f3f009049bc91e14dc856007932473318d12f8
- https://git.kernel.org/stable/c/8c611876c002d712ae5f246af5188432c708f79d
- https://git.kernel.org/stable/c/697cfe6e53b66cda196d6f8833b0ee97fefd0a8a
- https://git.kernel.org/stable/c/9062d50e75c24dc7911be05c9b1719b3b256af15