264 lines
14 KiB
JSON
264 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-98348",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.343Z",
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"datePublished": "2026-10-06T08:46:36.927Z",
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"dateUpdated": "2026-10-19T09:17:59.174Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T09:17:59.174Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/intel/ipw2x00/libipw_rx.c"
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],
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"versions": [
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{
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"version": "9e8571affd1c54b9638b4ff9844e47aae07310f6",
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"lessThan": "766268b429ae26d8ca599031fa962b0fe4673120",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9e8571affd1c54b9638b4ff9844e47aae07310f6",
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"lessThan": "d70bdb84cf1782039384c1ffa7a18b0303c286a7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9e8571affd1c54b9638b4ff9844e47aae07310f6",
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"lessThan": "400b89217058fac672134a0d4092c8493dadb8ad",
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"status": "affected",
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"versionType": "git"
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"lessThan": "46aa75291056b6dc5faaf956dffdb3e9662477b0",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9e8571affd1c54b9638b4ff9844e47aae07310f6",
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"lessThan": "e3025ecdb2057f866c09e059fc1466e81d6f243e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9e8571affd1c54b9638b4ff9844e47aae07310f6",
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"lessThan": "14cb425ba1f3a5d849e3bbc3d02d84e0ae195dbb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9e8571affd1c54b9638b4ff9844e47aae07310f6",
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"lessThan": "af1b69be19c34e28c0ae54bee954b58cd076969a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9e8571affd1c54b9638b4ff9844e47aae07310f6",
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"lessThan": "adb7118b7d2cfd7e8213c17d7d2829f353017754",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/intel/ipw2x00/libipw_rx.c"
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],
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"versions": [
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{
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"version": "2.6.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.271",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.222",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.189",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.158",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.112",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.54",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.8",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.15",
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"versionEndExcluding": "5.10.271"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/766268b429ae26d8ca599031fa962b0fe4673120"
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},
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{
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"url": "https://git.kernel.org/stable/c/d70bdb84cf1782039384c1ffa7a18b0303c286a7"
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},
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{
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"url": "https://git.kernel.org/stable/c/400b89217058fac672134a0d4092c8493dadb8ad"
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},
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{
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"url": "https://git.kernel.org/stable/c/46aa75291056b6dc5faaf956dffdb3e9662477b0"
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},
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{
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"url": "https://git.kernel.org/stable/c/e3025ecdb2057f866c09e059fc1466e81d6f243e"
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},
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{
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"url": "https://git.kernel.org/stable/c/14cb425ba1f3a5d849e3bbc3d02d84e0ae195dbb"
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},
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{
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"url": "https://git.kernel.org/stable/c/af1b69be19c34e28c0ae54bee954b58cd076969a"
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},
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{
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"url": "https://git.kernel.org/stable/c/adb7118b7d2cfd7e8213c17d7d2829f353017754"
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}
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],
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"title": "wifi: libipw: reject too-short association responses",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |