{ "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" } } } }