{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-98348", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.343Z", "datePublished": "2026-10-06T08:46:36.927Z", "dateUpdated": "2026-10-19T09:17:59.174Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:17:59.174Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libipw: reject too-short association responses\n\nlibipw_handle_assoc_resp() reads the capability, status and aid fields\nof the 30-byte association response prefix and then computes the\ninformation element length as\n\n\tstats->len - sizeof(*frame)\n\nstats->len is a u16 and sizeof() has type size_t, so the subtraction is\nevaluated as size_t and wraps instead of going negative. Truncating\nthat to the u16 length parameter of libipw_parse_info_param() turns a\nframe shorter than the fixed fields into a length near 64 KiB, and the\nparser then reads past the receive buffer.\n\nBoth the ipw2100 and ipw2200 management receive paths reach this\nfunction having established only that the frame carries the generic\n24-byte three-address header.\n\nReject the frame before any fixed field is touched.\n\nFound by an AI-assisted review of length arithmetic in management frame\nparsers. Verified with a KUnit case under Generic KASAN on arm64 under\nQEMU; I do not have the hardware, so it is not tested on a real device." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The malformed input is an 802.11 Association Response management frame received over the air. ipw2100 (isr_rx path) and ipw2200 (ipw_handle_mgmt_packet) send it through libipw_rx_mgt() into libipw_handle_assoc_resp(). The attacker must be within WiFi radio range.\nAC:L - The attacker only has to send an ASSOC_RESP frame of 24-29 bytes. The drivers check only for the 24-byte header, so stats->len - sizeof(*frame) (30) wraps to about 64K in the u16 length passed to libipw_parse_info_param(). No race or special state is involved.\nPR:N - libipw_rx_mgt() processes management frames before any 802.11 authentication or key exchange. An unauthenticated nearby transmitter can inject the frame.\nUI:N - The frame is processed in the receive path as soon as the interface is up. The victim does nothing.\nS:U - The out-of-bounds read stays inside the host kernel's own memory and crosses no virtualization or IOMMU boundary.\nC:L - libipw_parse_info_param() walks up to about 64KB of memory past the receive buffer. Those bytes only fill a local libipw_network on the stack, and through the QoS IE path the qos_data that goes to firmware. Nothing is returned to the attacker, so the disclosure is limited and indirect.\nI:N - The bug is read-only. Every copy from the parsed IEs is bounded (min() on ssid/rates, an exact-size check in libipw_read_qos_param_element) and lands in the fixed-size local network struct, so nothing is written out of bounds.\nA:H - Iterating about 64KB of information elements past a few-KB skb/DMA receive buffer can hit unmapped pages (or KASAN/KFENCE) and oops the kernel. Any station in range can resend the short frame repeatedly." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/intel/ipw2x00/libipw_rx.c" ], "versions": [ { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "766268b429ae26d8ca599031fa962b0fe4673120", "status": "affected", "versionType": "git" }, { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "d70bdb84cf1782039384c1ffa7a18b0303c286a7", "status": "affected", "versionType": "git" }, { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "400b89217058fac672134a0d4092c8493dadb8ad", "status": "affected", "versionType": "git" }, { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "46aa75291056b6dc5faaf956dffdb3e9662477b0", "status": "affected", "versionType": "git" }, { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "e3025ecdb2057f866c09e059fc1466e81d6f243e", "status": "affected", "versionType": "git" }, { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "14cb425ba1f3a5d849e3bbc3d02d84e0ae195dbb", "status": "affected", "versionType": "git" }, { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "af1b69be19c34e28c0ae54bee954b58cd076969a", "status": "affected", "versionType": "git" }, { "version": "9e8571affd1c54b9638b4ff9844e47aae07310f6", "lessThan": "adb7118b7d2cfd7e8213c17d7d2829f353017754", "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/intel/ipw2x00/libipw_rx.c" ], "versions": [ { "version": "2.6.15", "status": "affected" }, { "version": "0", "lessThan": "2.6.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.8", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "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": "2.6.15", "versionEndExcluding": "5.10.271" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.15", "versionEndExcluding": "5.15.222" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.15", "versionEndExcluding": "6.1.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.15", "versionEndExcluding": "6.6.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.15", "versionEndExcluding": "6.12.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.15", "versionEndExcluding": "6.18.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.15", "versionEndExcluding": "7.2.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.15", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/766268b429ae26d8ca599031fa962b0fe4673120" }, { "url": "https://git.kernel.org/stable/c/d70bdb84cf1782039384c1ffa7a18b0303c286a7" }, { "url": "https://git.kernel.org/stable/c/400b89217058fac672134a0d4092c8493dadb8ad" }, { "url": "https://git.kernel.org/stable/c/46aa75291056b6dc5faaf956dffdb3e9662477b0" }, { "url": "https://git.kernel.org/stable/c/e3025ecdb2057f866c09e059fc1466e81d6f243e" }, { "url": "https://git.kernel.org/stable/c/14cb425ba1f3a5d849e3bbc3d02d84e0ae195dbb" }, { "url": "https://git.kernel.org/stable/c/af1b69be19c34e28c0ae54bee954b58cd076969a" }, { "url": "https://git.kernel.org/stable/c/adb7118b7d2cfd7e8213c17d7d2829f353017754" } ], "title": "wifi: libipw: reject too-short association responses", "x_generator": { "engine": "bippy-1.2.0" } } } }