CVE-2026-74409
- Source
- https://cve.org/CVERecord?id=CVE-2026-74409
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74409.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74409
- Downstream
- Published
- 2026-08-15T05:59:17Z
- Modified
- 2026-08-18T03:56:47Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- wifi: rtw89: add bounds check on firmware mac_id in link lookup
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw89: add bounds check on firmware mac_id in link lookup
The mac_id field in RX descriptors is 8 bits wide (0-255), but assoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries. While the driver currently assigns mac_id values below 128, the descriptor value comes from firmware and is not validated before use as an array index. Add a defensive bounds check in rtw89_assoc_link_rcu_dereference() to guard against out-of-range firmware values.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74409.json" }- References
-
- https://git.kernel.org/stable/c/6d88244bb129755acca696f9227200f4a2d106a6
- https://git.kernel.org/stable/c/920101305e7601a33b9e01019f4ca526af2526ae
- https://git.kernel.org/stable/c/ad445de67359f24088d4305c05fbd7e34c4e35e3
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74409.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74409
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git