{"id":"CVE-2026-68353","title":"wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler\n\nThe firmware-controlled num_msg field (u8, 0-255) drives the loop in\nath6kl_wmi_tx_complete_eve…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 5297299c3fa6133275db0be99d69cd759b6cbfe9","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 35196a07603f8c94a4943093bc26d5b5826285f8","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 0e0fc04af9b443c6b425f00fb604ff599bc80d1d","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 69ac7ba3a3df6654e7daa82674575a8c4a1a63ea","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 289edc3c71344b89e6522891147cfb8f61b088bb","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < eb636fbc443149b3501c3f97e26225ddcb314a0f","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < c38b0d5c661951b5dd082bdf31f8a57a0ce6e540","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495","Linux 3.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T15:47:25.988106Z"},"published":"2026-08-10","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:53:09.345Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68353","references":[{"url":"https://git.kernel.org/stable/c/5297299c3fa6133275db0be99d69cd759b6cbfe9"},{"url":"https://git.kernel.org/stable/c/35196a07603f8c94a4943093bc26d5b5826285f8"},{"url":"https://git.kernel.org/stable/c/0e0fc04af9b443c6b425f00fb604ff599bc80d1d"},{"url":"https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea"},{"url":"https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb"},{"url":"https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f"},{"url":"https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540"},{"url":"https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495"}],"tags":["cve.org"],"epss":0.00286,"epssPercentile":0.19757,"ingestedAt":"2026-10-16T17:24:46.860Z","slug":"CVE-2026-68353","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler\n\nThe firmware-controlled num_msg field (u8, 0-255) drives the loop in\nath6kl_wmi_tx_complete_event_rx() without validation against the buffer\nlength. This allows out-of-bounds reads of up to 1020 bytes past the\nWMI event buffer when the firmware sends an inflated num_msg.\n\nAdd a check that the buffer is large enough to hold the fixed struct\nand the num_msg variable-length entries.\n\n## Affected\n\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 5297299c3fa6133275db0be99d69cd759b6cbfe9`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 35196a07603f8c94a4943093bc26d5b5826285f8`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 0e0fc04af9b443c6b425f00fb604ff599bc80d1d`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 69ac7ba3a3df6654e7daa82674575a8c4a1a63ea`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 289edc3c71344b89e6522891147cfb8f61b088bb`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < eb636fbc443149b3501c3f97e26225ddcb314a0f`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < c38b0d5c661951b5dd082bdf31f8a57a0ce6e540`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495`\n- `Linux 3.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}