310 lines
16 KiB
JSON
310 lines
16 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-2026-43062",
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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": "2026-05-01T14:12:55.981Z",
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"datePublished": "2026-05-05T15:17:27.830Z",
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"dateUpdated": "2026-10-19T19:06:12.056Z"
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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": "2026-08-05T12:25:40.332Z"
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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\nBluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()\n\nl2cap_ecred_reconf_rsp() casts the incoming data to struct\nl2cap_ecred_conn_rsp (the ECRED *connection* response, 8 bytes with\nresult at offset 6) instead of struct l2cap_ecred_reconf_rsp (2 bytes\nwith result at offset 0).\n\nThis causes two problems:\n\n - The sizeof(*rsp) length check requires 8 bytes instead of the\n correct 2, so valid L2CAP_ECRED_RECONF_RSP packets are rejected\n with -EPROTO.\n\n - rsp->result reads from offset 6 instead of offset 0, returning\n wrong data when the packet is large enough to pass the check.\n\nFix by using the correct type. Also pass the already byte-swapped\nresult variable to BT_DBG instead of the raw __le16 field."
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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:N/I:H/A:L",
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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 - Bluetooth L2CAP is reachable only by a nearby Bluetooth LE peer over the local radio link, not over routed IP networks.\nAC:L - Once an LE L2CAP ECRED channel/reconfiguration exchange exists, the attacker controls the response length and bytes; no hard-to-win race or environmental condition is required to hit the misparse.\nPR:N - The inbound HCI ACL/L2CAP signaling receive path has no local privilege or authentication check before parsing the peer's ECRED reconfiguration response.\nUI:N - No victim user action is required for packet processing beyond the system participating in a Bluetooth LE L2CAP session.\nS:U - The impact remains within the kernel/Bluetooth stack security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:N - The wrong struct makes the kernel read the result from attacker-controlled packet bytes at offset 6 after an 8-byte length check, so this commit does not expose kernel memory.\nI:H - The bug is a kernel protocol-parser type confusion that lets an adjacent peer drive incorrect ECRED reconfiguration state and channel teardown based on the wrong field; per the supplied guidance, type confusion is scored High for integrity.\nA:L - The practical availability impact is disruption or failure of ECRED reconfiguration/channel state, not a demonstrated kernel panic, hang, or whole-system crash from this fix."
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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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"net/bluetooth/l2cap_core.c"
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],
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"versions": [
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{
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"version": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "21d3ba696918d6373233aac0b9d51fcabdedddc0",
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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": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "3b94e62caa1dc1198d0d55d97bd710da1dee15d7",
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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": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "111f74547eee8cfedfb854284e80f35c8a491186",
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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": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "dd3b221e21079ade8263fbb7176f3d55ad75d3b6",
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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": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "d90150c72d2e6a8a3079e88755dafcfbe91c746d",
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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": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "5a1ea296f8589ce8f1e3141b2b123b34ad010e19",
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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": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "f110b8f58b254bf997cec1bd60701b7798e9bb82",
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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": "15f02b91056253e8cdc592888f431da0731337b8",
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"lessThan": "15145675690cab2de1056e7ed68e59cbd0452529",
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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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"net/bluetooth/l2cap_core.c"
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],
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"versions": [
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{
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"version": "5.7",
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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": "5.7",
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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": "5.10.253",
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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": "5.15.203",
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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": "6.1.167",
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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": "6.6.130",
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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": "6.12.78",
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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": "6.18.20",
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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": "6.19.10",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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": "5.7",
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"versionEndExcluding": "5.10.253"
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},
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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": "5.7",
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"versionEndExcluding": "5.15.203"
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},
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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": "5.7",
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"versionEndExcluding": "6.1.167"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.19.10"
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},
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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": "5.7",
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/21d3ba696918d6373233aac0b9d51fcabdedddc0"
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},
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{
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"url": "https://git.kernel.org/stable/c/3b94e62caa1dc1198d0d55d97bd710da1dee15d7"
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},
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{
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"url": "https://git.kernel.org/stable/c/111f74547eee8cfedfb854284e80f35c8a491186"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd3b221e21079ade8263fbb7176f3d55ad75d3b6"
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},
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{
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"url": "https://git.kernel.org/stable/c/d90150c72d2e6a8a3079e88755dafcfbe91c746d"
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},
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{
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"url": "https://git.kernel.org/stable/c/5a1ea296f8589ce8f1e3141b2b123b34ad010e19"
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},
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{
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"url": "https://git.kernel.org/stable/c/f110b8f58b254bf997cec1bd60701b7798e9bb82"
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},
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{
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"url": "https://git.kernel.org/stable/c/15145675690cab2de1056e7ed68e59cbd0452529"
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}
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],
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"title": "Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()",
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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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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-43062",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:14:12.423204Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-843",
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"description": "CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T19:06:12.056Z"
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}
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}
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]
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}
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} |