{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68196","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.374Z","datePublished":"2026-08-10T12:00:14.686Z","dateUpdated":"2026-08-19T16:31:13.791Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-19T16:31:13.791Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: validate assoc response length before subtracting header\n\nwilc_parse_assoc_resp_info() computes the trailing IE length as\n\n\ties_len = buffer_len - sizeof(*res);\n\nwithout first checking that buffer_len is at least sizeof(struct\nwilc_assoc_resp) (6 bytes). buffer_len is the length reported for a\nreceived association response (host_int_parse_assoc_resp_info() passes\nhif_drv->assoc_resp / assoc_resp_info_len straight in) and must be\nvalidated before the driver accesses the fixed header.\n\nFor a frame shorter than the 6-byte fixed header, the subtraction wraps.\nFor a four-byte response the result is truncated to a u16 ies_len of\n65534, so kmemdup() then attempts to copy 65534 bytes starting at\nbuffer + sizeof(*res), beyond the valid association-response data\n(CWE-125). A response shorter than four bytes can also cause an\nout-of-bounds read of res->status_code at offsets 2 and 3.\n\nReject frames too short to hold the fixed header before touching the\nheader or computing ies_len. Also set the connection status to a failure\non this path: the caller falls through to a\n\"conn_info->status == WLAN_STATUS_SUCCESS\" check after the parser\nreturns, so leaving the status untouched could let a malformed short\nresponse be treated as a successful association."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H","baseScore":8.3,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - Exploitation requires a rogue WiFi AP to send a malformed 802.11 Association Response over the air during STA join; per kernel guidance WiFi frame injection is Adjacent, not routable Network.\nAC:L - The attacker fully controls the rogue AP and can craft sub-6-byte association responses with SUCCESS status; once the victim initiates or auto-rejoins association, the malformed frame reliably reaches the parser.\nPR:N - No privileges on the victim are required; a remote attacker operating a rogue AP triggers the bug during the standard pre-authentication WiFi association handshake without local access or credentials.\nUI:N - Exploitation does not require per-attempt user action when devices auto-reconnect to a saved SSID or join an evil-twin AP broadcasting a known network name, which is common on embedded/IoT WILC1000 deployments.\nS:U - The vulnerability is confined to kernel memory and driver state on the affected host; impact does not cross a security boundary such as VM escape, sandbox escape, or IOMMU/DMA isolation bypass.\nC:H - Integer underflow drives kmemdup() to copy up to ~65534 bytes past the 512-byte assoc_resp buffer, leaking adjacent kernel heap data that is forwarded to userspace via cfg80211_connect_bss() response IEs.\nI:L - Beyond the OOB read, a malformed short response can leave conn_info->status as WLAN_STATUS_SUCCESS and report a bogus successful association, corrupting the device's connection integrity without granting arbitrary kernel write.\nA:H - The oversized kmemdup() memcpy reads far beyond the kmalloc-backed assoc_resp array, which can fault on unmapped memory and cause a kernel oops or panic; repeated triggers also impose severe memory pressure."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/microchip/wilc1000/hif.c"],"versions":[{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"d79b92417f33424ff23dad76716ed8f2cefb1083","status":"affected","versionType":"git"},{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"b81d0ea9e1daa215b3da68c1f4f6fb07940c2f6a","status":"affected","versionType":"git"},{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"8d50acf5420de0c4da99c2d634731c9d3164a755","status":"affected","versionType":"git"},{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"584c8954ad55f8b09b475be6db710fe40ceb988c","status":"affected","versionType":"git"},{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"4d410320e8ae5933e651660c9fadc1d380309e23","status":"affected","versionType":"git"},{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"e511e93abd6eeedcd5b3c55516241f414fbde64a","status":"affected","versionType":"git"},{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"8ccdf8c8de87a9580df37c3c1ec53ba88cedef65","status":"affected","versionType":"git"},{"version":"c5c77ba18ea66aa05441c71e38473efb787705a4","lessThan":"4c4c97b60a5e978121d9ee8cb0ab3916e5d6a8de","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/microchip/wilc1000/hif.c"],"versions":[{"version":"4.2","status":"affected"},{"version":"0","lessThan":"4.2","status":"unaffected","versionType":"semver"},{"version":"5.10.265","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.216","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.183","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.10.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d79b92417f33424ff23dad76716ed8f2cefb1083"},{"url":"https://git.kernel.org/stable/c/b81d0ea9e1daa215b3da68c1f4f6fb07940c2f6a"},{"url":"https://git.kernel.org/stable/c/8d50acf5420de0c4da99c2d634731c9d3164a755"},{"url":"https://git.kernel.org/stable/c/584c8954ad55f8b09b475be6db710fe40ceb988c"},{"url":"https://git.kernel.org/stable/c/4d410320e8ae5933e651660c9fadc1d380309e23"},{"url":"https://git.kernel.org/stable/c/e511e93abd6eeedcd5b3c55516241f414fbde64a"},{"url":"https://git.kernel.org/stable/c/8ccdf8c8de87a9580df37c3c1ec53ba88cedef65"},{"url":"https://git.kernel.org/stable/c/4c4c97b60a5e978121d9ee8cb0ab3916e5d6a8de"}],"title":"wifi: wilc1000: validate assoc response length before subtracting header","x_generator":{"engine":"bippy-1.2.0"}}}}