Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: usb: catc: bound the RX packet length in catc_rx_done() catc_rx_done() walks a multi-packet URB, reading a two-byte length from each packet header. Its bound, pkt_len > urb->actual_length, ignores the header offset and compares against the whole transfer rather than the bytes left from pkt_start, so a crafted packet header makes skb_copy_to_linear_data() read past the buffer. A length below ETH_HLEN is also accepted, including zero, and eth_type_trans() then reads a MAC header from the uninitialised tailroom of a shorter skb. The is_f5u011 branch takes its length straight from the transfer, so a zero-length URB reaches the same path. Track the bytes remaining from the current packet, and reject a header that does not fit, a length past what is left, and a length below an Ethernet header. A transfer shorter than an Ethernet header, including a zero-length one, previously became a runt skb passed to netif_rx() and counted as received; it is now counted in rx_length_errors and ends the walk.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3942557938f846e7481f6ccb2b41ccbdee61baa1; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2f87bbd5a7bf6ee79d598f7e22cf77810d29ae87; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 4cc0a8eb2f9336cfa3e4ac329bc5585ca970ced3; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 21e206dd88b3de6e36bb607dec3797c59bc3007b; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 801e21cf7dd6bcee31db907625d5045f21c9c1d9; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before dd9c6f8f05170223edec2dac476606cd40d9acb7; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9d4be026bdff2c1da7b6c7e01c0a47f2df409e97; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9d565b6b72fe3f41fd43636e143072848105189f |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.271 through 5.10.*; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.55 through 6.18.*; unaffected 7.2.9 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3942557938f846e7481f6ccb2b41ccbdee61baa1
- https://git.kernel.org/stable/c/2f87bbd5a7bf6ee79d598f7e22cf77810d29ae87
- https://git.kernel.org/stable/c/4cc0a8eb2f9336cfa3e4ac329bc5585ca970ced3
- https://git.kernel.org/stable/c/21e206dd88b3de6e36bb607dec3797c59bc3007b
- https://git.kernel.org/stable/c/801e21cf7dd6bcee31db907625d5045f21c9c1d9
- https://git.kernel.org/stable/c/dd9c6f8f05170223edec2dac476606cd40d9acb7
- https://git.kernel.org/stable/c/9d4be026bdff2c1da7b6c7e01c0a47f2df409e97
- https://git.kernel.org/stable/c/9d565b6b72fe3f41fd43636e143072848105189f