{"id":"CVE-2026-68199","summary":"wifi: ath6kl: fix OOB access from firmware ADDBA window size","details":"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_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-\u003ehold_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.","modified":"2026-08-15T11:31:01.254502341Z","published":"2026-08-10T12:00:18.278Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68199.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327"},{"type":"WEB","url":"https://git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68199.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68199"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"bdcd81707973cf8aa9305337166f8ee842a050d4"},{"fixed":"d4558c140782180e2c80a7588a4af9f8675adfc4"},{"fixed":"5a65fd4722416061698b0a3277222381efbc4882"},{"fixed":"58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c"},{"fixed":"cec0a487cf38ac1f9bca240ffe8a94c5014b72f2"},{"fixed":"44126b6994eeb28f2103b638e698f40a1244f327"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68199.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68199.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}