Answer in brief
CVE-2026-93079 records a High severity (CVSS 7.8) vulnerability in cxl/features: Reject Get Feature count larger than the output buffer. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5908f3ed6dc209e5c824e63afda7545805f75a7e <3f02031a0a53de0d3ef066c92d0486b2b11be40c || >=5908f3ed6dc209e5c824e63afda7545805f75a7e <329ea475581c647a680a6937e353c1a6e2534b40 || >=5908f3ed6dc209e5c824e63afda7545805f75a7e <4bf6bac375076ced2fa4b3fef8739bd985f93456 | 3f02031a0a53de0d3ef066c92d0486b2b11be40c, 329ea475581c647a680a6937e353c1a6e2534b40, 4bf6bac375076ced2fa4b3fef8739bd985f93456 |
| Linux/Linuxgeneric | 6.15 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.