{"id":"CVE-2026-68199","title":"wifi: ath6kl: fix OOB access from firmware ADDBA window size","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix OOB access from firmware ADDBA window size\n\naggr_recv_addba_req_evt() logs a debug message when the firmware-supplied\nwin_sz is outside [AGGR_WIN_SZ_M…","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 >= bdcd81707973cf8aa9305337166f8ee842a050d4 < c8e3ca7954d8233fbc54bd370c1827670f43c538","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < f480d9910fcfe326db3a6281df80e83af347193e","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 67bc9af4f41f2bdba20404fbd753b2a1bd6dd352","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < d4558c140782180e2c80a7588a4af9f8675adfc4","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 5a65fd4722416061698b0a3277222381efbc4882","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < cec0a487cf38ac1f9bca240ffe8a94c5014b72f2","Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 44126b6994eeb28f2103b638e698f40a1244f327","Linux 3.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:45:42.892507Z"},"published":"2026-08-10","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:53:03.113Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68199","references":[{"url":"https://git.kernel.org/stable/c/c8e3ca7954d8233fbc54bd370c1827670f43c538"},{"url":"https://git.kernel.org/stable/c/f480d9910fcfe326db3a6281df80e83af347193e"},{"url":"https://git.kernel.org/stable/c/67bc9af4f41f2bdba20404fbd753b2a1bd6dd352"},{"url":"https://git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4"},{"url":"https://git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882"},{"url":"https://git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c"},{"url":"https://git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2"},{"url":"https://git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327"}],"tags":["cve.org"],"epss":0.00407,"epssPercentile":0.33442,"ingestedAt":"2026-10-16T17:24:46.848Z","slug":"CVE-2026-68199","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix OOB access from firmware ADDBA window size\n\naggr_recv_addba_req_evt() logs a debug message when the firmware-supplied\nwin_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not\nreturn. The out-of-range win_sz is then used in TID_WINDOW_SZ() to\ncompute a kzalloc size and stored in rxtid->hold_q_sz, leading to\nzero-size or overflowed allocations and subsequent out-of-bounds access.\n\nClean up any previously active aggregation session for the TID first,\nthen return early when win_sz is out of the valid range, instead of\nproceeding with a broken allocation size.\n\n## Affected\n\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < c8e3ca7954d8233fbc54bd370c1827670f43c538`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < f480d9910fcfe326db3a6281df80e83af347193e`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 67bc9af4f41f2bdba20404fbd753b2a1bd6dd352`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < d4558c140782180e2c80a7588a4af9f8675adfc4`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 5a65fd4722416061698b0a3277222381efbc4882`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < cec0a487cf38ac1f9bca240ffe8a94c5014b72f2`\n- `Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 44126b6994eeb28f2103b638e698f40a1244f327`\n- `Linux 3.2`\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":[]}