Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ALSA: usbusx2y: validate URB actual_length in interrupt callback i_usx2y_in04_int() processes the interrupt URB data without checking urb->actual_length. A short transfer from a malfunctioning device would cause the handler to process uninitialized heap data from the kmalloc-allocated in04_buf, which is then copied to the mmap-accessible ctl_snapshot[] array. Fix by using kzalloc() for in04_buf to zero-initialize the buffer, and adding an actual_length check to skip processing on short transfers while still resubmitting the URB.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c3576cb77b527f223cf2b9fc2b2e9af5e7adee25; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c156584999bf15118f523ef6c6fedc5b21f46bd9; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b0c30fe6c0d5902bd8a7d1d5720bead5bbe46f7d; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2770321b358658e0a39fe39ccf6a91ee97a81931; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8f5ef203abda9dd36b2af473c7b737d544f807bd |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 6.6.160 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2.7 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c3576cb77b527f223cf2b9fc2b2e9af5e7adee25
- https://git.kernel.org/stable/c/c156584999bf15118f523ef6c6fedc5b21f46bd9
- https://git.kernel.org/stable/c/b0c30fe6c0d5902bd8a7d1d5720bead5bbe46f7d
- https://git.kernel.org/stable/c/2770321b358658e0a39fe39ccf6a91ee97a81931
- https://git.kernel.org/stable/c/8f5ef203abda9dd36b2af473c7b737d544f807bd