235 lines
12 KiB
JSON
235 lines
12 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-2025-40141",
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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": "2025-04-16T07:20:57.171Z",
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"datePublished": "2025-11-12T10:23:24.856Z",
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"dateUpdated": "2026-10-15T22:02:38.774Z"
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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": "2026-08-05T12:08:03.741Z"
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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: ISO: Fix possible UAF on iso_conn_free\n\nThis attempt to fix similar issue to sco_conn_free where if the\nconn->sk is not set to NULL may lead to UAF on iso_conn_free."
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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:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8,
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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 vulnerable object lifetime is driven by the Bluetooth ISO/HCI connection state machine, and the final use-after-free write occurs when an HCI connect/disconnect/abort event from a Bluetooth peer drops the last `iso_conn` reference (`iso_connect_cfm`/`iso_disconn_cfm` → `iso_conn_del` → `iso_conn_free`). Per CNA guidance Bluetooth-reachable code is Adjacent, and an attacker-controlled LE Audio device can drive the CIS/BIS setup and teardown events that complete the race.\nAC:L - The attacker controls both sides of the race directly — one thread calls `listen()` (which drops the socket lock across `iso_listen_bis()`, leaving `sk_state == BT_BOUND` while `conn->sk` is set) while another calls `close()`, hitting the `default:` arm of `__iso_sock_close()` that zaps the socket without clearing `conn->sk`. The window can be retried indefinitely, and the delayed conn put gives a long, tunable reallocation window.\nPR:L - `iso_sock_create()` performs no capability check, so any unprivileged local user can open a `BTPROTO_ISO` `SOCK_SEQPACKET` socket and drive the listen/close race; no CAP_NET_ADMIN or root is required.\nUI:N - The race is driven entirely by the attacker's own threads plus asynchronous HCI events; no action by a legitimate user or administrator is needed.\nS:U - The corruption is confined to kernel slab memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A use-after-free on a freed `struct iso_pinfo` lets the attacker reoccupy the slab slot with a chosen object, and the stale `conn->sk` plus the `iso_sock_hold()` read of freed memory can be leveraged into kernel memory disclosure.\nI:H - `iso_conn_free()` performs an 8-byte write at a fixed offset into the freed socket object; after heap spraying this becomes a targeted write into an attacker-chosen kernel structure, enabling pointer/refcount corruption and control-flow hijack.\nA:H - The use-after-free reliably corrupts slab memory and causes kernel oops/panic (as demonstrated by the KASAN slab-use-after-free report in the sibling SCO fix), and it can be triggered 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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"net/bluetooth/iso.c"
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],
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"versions": [
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{
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"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
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"lessThan": "eba6d787ec117a5d2c60f9644e0a39c18542b6be",
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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": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
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"lessThan": "5319145a07d8bf5b0782b25cb3115825689d42bb",
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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": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
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"lessThan": "80689777919f02328eb873769de4647c9dd3e371",
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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": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
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"lessThan": "c92ad1a155ccfa38b87bd1d998287e1c0a24248d",
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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": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
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"lessThan": "9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8",
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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/iso.c"
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],
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"versions": [
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{
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"version": "6.0",
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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": "6.0",
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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": "6.1.156",
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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": "6.6.112",
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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": "6.12.53",
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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": "6.17.3",
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"lessThanOrEqual": "6.17.*",
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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",
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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": "6.0",
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"versionEndExcluding": "6.1.156"
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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": "6.0",
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"versionEndExcluding": "6.6.112"
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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": "6.0",
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"versionEndExcluding": "6.12.53"
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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": "6.0",
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"versionEndExcluding": "6.17.3"
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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": "6.0",
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"versionEndExcluding": "6.18"
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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/eba6d787ec117a5d2c60f9644e0a39c18542b6be"
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},
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{
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"url": "https://git.kernel.org/stable/c/5319145a07d8bf5b0782b25cb3115825689d42bb"
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},
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{
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"url": "https://git.kernel.org/stable/c/80689777919f02328eb873769de4647c9dd3e371"
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},
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{
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"url": "https://git.kernel.org/stable/c/c92ad1a155ccfa38b87bd1d998287e1c0a24248d"
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},
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{
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"url": "https://git.kernel.org/stable/c/9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8"
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}
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],
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"title": "Bluetooth: ISO: Fix possible UAF on iso_conn_free",
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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-2025-40141",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:57:17.170509Z"
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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": "2026-10-15T22:02:38.774Z"
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}
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}
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]
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}
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} |