{"id":"CVE-2026-68353","summary":"wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler","details":"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_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.","modified":"2026-08-21T03:30:34.932362287Z","published":"2026-08-10T12:03:30.330Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68353.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0e0fc04af9b443c6b425f00fb604ff599bc80d1d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/35196a07603f8c94a4943093bc26d5b5826285f8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5297299c3fa6133275db0be99d69cd759b6cbfe9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68353.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68353"},{"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":"5297299c3fa6133275db0be99d69cd759b6cbfe9"},{"fixed":"35196a07603f8c94a4943093bc26d5b5826285f8"},{"fixed":"0e0fc04af9b443c6b425f00fb604ff599bc80d1d"},{"fixed":"69ac7ba3a3df6654e7daa82674575a8c4a1a63ea"},{"fixed":"289edc3c71344b89e6522891147cfb8f61b088bb"},{"fixed":"eb636fbc443149b3501c3f97e26225ddcb314a0f"},{"fixed":"c38b0d5c661951b5dd082bdf31f8a57a0ce6e540"},{"fixed":"3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68353.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"5.10.265"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.216"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.183"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"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/osv-test-cve-osv-conversion/osv-output/CVE-2026-68353.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:N/A:H"}]}