Description
In the Linux kernel, the following vulnerability has been resolved: net/9p: Fix buffer overflow in USB transport layer A buffer overflow vulnerability exists in the USB 9pfs transport layer where inconsistent size validation between packet header parsing and actual data copying allows a malicious USB host to overflow heap buffers. The issue occurs because: - usb9pfs_rx_header() validates only the declared size in packet header - usb9pfs_rx_complete() uses req->actual (actual received bytes) for memcpy This allows an attacker to craft packets with small declared size (bypassing validation) but large actual payload (triggering overflow in memcpy). Add validation in usb9pfs_rx_complete() to ensure req->actual does not exceed the buffer capacity before copying data.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a3be076dc174d9022a71a12554feb4c97b5c4d5c to < 0da18d49f874d444ad83c8a546fa33bfcf2f582caffecteda3be076dc174d9022a71a12554feb4c97b5c4d5c to < df8462f0fc045b4475dc494a5787a03c972ba2a2affecteda3be076dc174d9022a71a12554feb4c97b5c4d5c to < c04db81cd0288dfc68b7a0f7d09bd49b40bba451affected
Linux Linux
Default version status: affected
6.12affected0 to < 6.12unaffected6.12.53 to ≤ 6.12.*unaffected6.17.3 to ≤ 6.17.*unaffected6.18 to ≤ *unaffected