{"id":"CVE-2026-98830","title":"wifi: wfx: validate MIB read length before copying to caller","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wfx: validate MIB read length before copying to caller\n\nwfx_hif_read_mib() copies reply->length bytes from the firmware\nresponse into the caller-provided buffer w…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < 02886c18a340da59df57365f29009e1258bfe333","Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < 71d140099165de03128c00dd129f1eab21c6a3c4","Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < 7acb36fd60a3e7b858f12e69a919c3609b281408","Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < ce67ebe9d8629776ce38e6995ae72fb903c828db","Linux 5.5"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:49:31.843Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98830","references":[{"url":"https://git.kernel.org/stable/c/02886c18a340da59df57365f29009e1258bfe333"},{"url":"https://git.kernel.org/stable/c/71d140099165de03128c00dd129f1eab21c6a3c4"},{"url":"https://git.kernel.org/stable/c/7acb36fd60a3e7b858f12e69a919c3609b281408"},{"url":"https://git.kernel.org/stable/c/ce67ebe9d8629776ce38e6995ae72fb903c828db"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T16:47:32.470Z","slug":"CVE-2026-98830","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wfx: validate MIB read length before copying to caller\n\nwfx_hif_read_mib() copies reply->length bytes from the firmware\nresponse into the caller-provided buffer without checking that\nreply->length does not exceed val_len. A firmware response with\na length field larger than expected overruns the caller buffer and\nreads past the end of the reply allocation.\n\nReplace the dead -ENOMEM check with an active validation that\nreply->length fits within val_len before the memcpy.\n\n## Affected\n\n- `Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < 02886c18a340da59df57365f29009e1258bfe333`\n- `Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < 71d140099165de03128c00dd129f1eab21c6a3c4`\n- `Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < 7acb36fd60a3e7b858f12e69a919c3609b281408`\n- `Linux >= f95a29d40782f4f0052a692a822de3ba044b19ff < ce67ebe9d8629776ce38e6995ae72fb903c828db`\n- `Linux 5.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}