{"id":"CVE-2026-74408","title":"wifi: ath9k: fix OOB access from firmware tx status queue ID","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: fix OOB access from firmware tx status queue ID\n\nath_tx_edma_tasklet() accesses sc->tx.txq[ts.qid] where ts.qid is a\n4-bit hardware field (0-15), but the t…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54","Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 734db72d55ca578a344dfa33e30145032c074b25","Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < f5931d06b45ed402572bfe5832fff15864ef5481","Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 46ca1451f61b598f45cb5259e066d305444d95fc","Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < a9e055ac62cb3fcea262d4b687ec73eed82b3379","Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 5435fd3edcb11c7cc4002847c83e9a50b49284dc","Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 336d4c8cd9b1646060ee690c881d465dfc09c6c0","Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 7ce2f118a2389e8f0a64068c6fe7cc7d40639be0","Linux 3.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:55:57.152844Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:05:43.633Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74408","references":[{"url":"https://git.kernel.org/stable/c/fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54"},{"url":"https://git.kernel.org/stable/c/734db72d55ca578a344dfa33e30145032c074b25"},{"url":"https://git.kernel.org/stable/c/f5931d06b45ed402572bfe5832fff15864ef5481"},{"url":"https://git.kernel.org/stable/c/46ca1451f61b598f45cb5259e066d305444d95fc"},{"url":"https://git.kernel.org/stable/c/a9e055ac62cb3fcea262d4b687ec73eed82b3379"},{"url":"https://git.kernel.org/stable/c/5435fd3edcb11c7cc4002847c83e9a50b49284dc"},{"url":"https://git.kernel.org/stable/c/336d4c8cd9b1646060ee690c881d465dfc09c6c0"},{"url":"https://git.kernel.org/stable/c/7ce2f118a2389e8f0a64068c6fe7cc7d40639be0"}],"tags":["cve.org"],"epss":0.00412,"epssPercentile":0.33948,"ingestedAt":"2026-10-16T19:46:24.365Z","slug":"CVE-2026-74408","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: fix OOB access from firmware tx status queue ID\n\nath_tx_edma_tasklet() accesses sc->tx.txq[ts.qid] where ts.qid is a\n4-bit hardware field (0-15), but the txq array only has\nATH9K_NUM_TX_QUEUES (10) entries. A qid >= 10 causes an OOB array\naccess.\n\nAdd a bounds check on ts.qid before using it as an array index.\n\n## Affected\n\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < fb11083db9d7d6fb8f98bbba1cbfcf3fb7b4bf54`\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 734db72d55ca578a344dfa33e30145032c074b25`\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < f5931d06b45ed402572bfe5832fff15864ef5481`\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 46ca1451f61b598f45cb5259e066d305444d95fc`\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < a9e055ac62cb3fcea262d4b687ec73eed82b3379`\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 5435fd3edcb11c7cc4002847c83e9a50b49284dc`\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 336d4c8cd9b1646060ee690c881d465dfc09c6c0`\n- `Linux >= fce041beb03f93c7a771f0b4b6c45bb71ef90901 < 7ce2f118a2389e8f0a64068c6fe7cc7d40639be0`\n- `Linux 3.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}