Description
In the Linux kernel, the following vulnerability has been resolved: cxl/features: Reject Get Feature count larger than the output buffer cxlctl_get_feature() sizes its output buffer from the user's fwctl_rpc.out_len, but the device is told to write cxl_mbox_get_feat_in.count bytes into rpc_out->payload, which is a separate user-controlled value. Nothing bounds count against out_len, so a small out_len with a large count overflows the kvzalloc()'d buffer. A heap OOB write reachable from FWCTL_RPC. Reject requests where count exceeds the available payload room, before allocating.
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
5908f3ed6dc209e5c824e63afda7545805f75a7e to < 3f02031a0a53de0d3ef066c92d0486b2b11be40caffected5908f3ed6dc209e5c824e63afda7545805f75a7e to < 329ea475581c647a680a6937e353c1a6e2534b40affected5908f3ed6dc209e5c824e63afda7545805f75a7e to < 4bf6bac375076ced2fa4b3fef8739bd985f93456affected
Linux Linux
Default version status: affected
6.15affected0 to < 6.15unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected