Answer in brief
CVE-2026-90407 records a Unknown severity vulnerability in wifi: ath11k: fix overreads in ath11k_wmi_process_csa_switch_count_event(). 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.
A CVSS score is not reported in the current record. 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 | >=d5c65159f2895379e11ca13f62feabe93278985d <f760b7d7e43584d2fa9bffcec1a04e502609f827 || >=d5c65159f2895379e11ca13f62feabe93278985d <d6625dc5f1fe42cd81b8c57a1f5317afb9b410ce || >=d5c65159f2895379e11ca13f62feabe93278985d <0364926fb4bfb5b798e5fe2785b3023b4f767327 || >=d5c65159f2895379e11ca13f62feabe93278985d <5de2b8c53714ad58f2fda118cd29ebbe31b38665 || >=d5c65159f2895379e11ca13f62feabe93278985d <208d7fdb85976a737a715b81d54efaff6703880c | f760b7d7e43584d2fa9bffcec1a04e502609f827, d6625dc5f1fe42cd81b8c57a1f5317afb9b410ce, 0364926fb4bfb5b798e5fe2785b3023b4f767327, 5de2b8c53714ad58f2fda118cd29ebbe31b38665, 208d7fdb85976a737a715b81d54efaff6703880c |
| Linux/Linuxgeneric | 5.6 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 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: wifi: ath11k: fix overreads in ath11k_wmi_process_csa_switch_count_event() There is no policy entry for WMI_TAG_PDEV_CSA_SWITCH_COUNT_STATUS_EVENT, so the parse infrastructure does not enforce a minimum length for the event struct. Additionally, the num_vdevs field is taken directly from firmware and used as a loop bound over the vdev_ids array without checking that it fits within the TLV payload. Either condition can cause an out-of-bounds read. Add a TLV policy entry for WMI_TAG_PDEV_CSA_SWITCH_COUNT_STATUS_EVENT so the parse infrastructure enforces a minimum length for the fixed-size event struct. Add a helper ath11k_wmi_tlv_data_len() to recover the payload length of a parsed TLV from the header preceding its data pointer. Use it in ath11k_wmi_process_csa_switch_count_event() to bound num_vdevs before the loop. Compile tested only.
Quoted source text, attributed separately from HOL analysis.