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-2026-64010",
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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": "2026-07-19T07:54:57.026Z",
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"datePublished": "2026-07-19T14:56:25.162Z",
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"dateUpdated": "2026-08-05T12:38:10.194Z"
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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": "2026-08-05T12:38:10.194Z"
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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\nnfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc()\n\nA race condition exists in the NFC LLCP connection state machine where\nthe connection acceptance packet (CC) can be processed concurrently with\nsocket release. This can lead to a use-after-free of the socket object.\n\nWhen nfc_llcp_recv_cc() moves the socket from the connecting_sockets\nlist to the sockets list, it does so without holding the socket lock.\nIf llcp_sock_release() is executing concurrently, it might have already\nunlinked the socket and dropped its references, which can result in\nnfc_llcp_recv_cc() linking a freed socket into the live list.\n\nFix this by holding lock_sock() during the state transition and list\nmovement in nfc_llcp_recv_cc(). After acquiring the lock, check if\nthe socket is still hashed to ensure it hasn't already been unlinked\nand marked for destruction by the release path. This aligns the locking\npattern with recv_hdlc() and recv_disc()."
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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:H/I:H/A:H",
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"baseScore": 8.8,
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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 corrupting input is an NFC LLCP Connection Complete (CC) PDU delivered over the NFC radio from a nearby peer; per kernel CNA guidance, NFC/Bluetooth-class wireless reachability maps to Adjacent rather than Local or Network.\nAC:L - The attacker can control both sides of the race by concurrently calling connect()/close() on an LLCP socket while timing CC transmission from an adjacent NFC device, making exploitation depend only on attacker-controlled timing rather than victim state.\nPR:N - An adjacent attacker needs no privileges on the victim system—the kernel processes inbound NFC frames in kernel context; SOCK_STREAM LLCP sockets require no CAP_NET_RAW, so no elevated credentials are needed on either attack path.\nUI:N - Exploitation can be fully automated by a local or adjacent attacker scripting concurrent connect/close and CC injection without requiring any deliberate victim action beyond the device having NFC active and an LLCP session in progress.\nS:U - Impact is confined to kernel memory corruption and local privilege escalation within the same kernel security domain; there is no VM escape, IOMMU bypass, or other cross-authority boundary crossing.\nC:H - The use-after-free operates on a freed socket structure still referenced in kernel linked lists, enabling reads of stale heap contents and kernel pointer disclosure as part of UAF exploitation.\nI:H - The UAF re-links a freed socket into the live list and writes connection TLVs into freed memory via nfc_llcp_parse_connection_tlv(), providing a heap corruption primitive suitable for arbitrary write and code execution.\nA:H - Use-after-free of a socket object in the NFC receive path reliably causes kernel oops/panic or hang, and the freed-but-linked socket corrupts subsequent list walks causing system crash."
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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/nfc/llcp_core.c"
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],
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"versions": [
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{
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"version": "a69f32af86e389dd232b1bb2269e202c1bfcc60f",
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"lessThan": "dce85215a6c7b0fd753f577a4c487f647119884c",
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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": "a69f32af86e389dd232b1bb2269e202c1bfcc60f",
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"lessThan": "bd08bb7443c501d2f2a71d529e4afcf11c9b07d2",
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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": "a69f32af86e389dd232b1bb2269e202c1bfcc60f",
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"lessThan": "0b45c31746e1523d5d482fda8fcf54a35ac417f1",
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"status": "affected",
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"lessThan": "ee2d1a8a1833c5e56e9a1745e64b0b4edda732c2",
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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": "a69f32af86e389dd232b1bb2269e202c1bfcc60f",
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"lessThan": "ad8a27d63cac96bac441edd002209ebd996e12fb",
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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": "a69f32af86e389dd232b1bb2269e202c1bfcc60f",
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"lessThan": "650bdd8fdfab64a09ee474150313dbc48c374795",
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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": "a69f32af86e389dd232b1bb2269e202c1bfcc60f",
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"lessThan": "b2a60f7f846faaf5c2cdad4ea6d3a33e5f863183",
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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": "a69f32af86e389dd232b1bb2269e202c1bfcc60f",
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"lessThan": "b493ea2765cc17cb8aa7e7544a4b6dcb05b6ed77",
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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/nfc/llcp_core.c"
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],
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"versions": [
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{
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"version": "3.6",
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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": "3.6",
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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": "5.10.259",
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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": "5.15.210",
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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": "6.1.176",
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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": "6.6.143",
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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": "6.12.93",
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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": "6.18.35",
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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": "7.0.12",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.6",
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"versionEndExcluding": "5.10.259"
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"references": [
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"url": "https://git.kernel.org/stable/c/dce85215a6c7b0fd753f577a4c487f647119884c"
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},
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{
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"url": "https://git.kernel.org/stable/c/bd08bb7443c501d2f2a71d529e4afcf11c9b07d2"
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},
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{
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"url": "https://git.kernel.org/stable/c/0b45c31746e1523d5d482fda8fcf54a35ac417f1"
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},
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{
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"url": "https://git.kernel.org/stable/c/ee2d1a8a1833c5e56e9a1745e64b0b4edda732c2"
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},
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{
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"url": "https://git.kernel.org/stable/c/ad8a27d63cac96bac441edd002209ebd996e12fb"
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},
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{
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"url": "https://git.kernel.org/stable/c/650bdd8fdfab64a09ee474150313dbc48c374795"
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{
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"url": "https://git.kernel.org/stable/c/b2a60f7f846faaf5c2cdad4ea6d3a33e5f863183"
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},
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{
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"url": "https://git.kernel.org/stable/c/b493ea2765cc17cb8aa7e7544a4b6dcb05b6ed77"
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}
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],
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"title": "nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |