338 lines
18 KiB
JSON
338 lines
18 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-2026-53358",
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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": "2026-06-09T07:44:35.400Z",
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"datePublished": "2026-07-02T13:43:17.630Z",
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"dateUpdated": "2026-10-19T20:07:44.244Z"
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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": "2026-08-05T12:35:07.724Z"
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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: use chan timer to close channels in cleanup_listen()\n\nl2cap_chan_close() removes the channel from conn->chan_l, which\nmust be done under conn->lock. cleanup_listen() runs under the\nparent sk_lock, so acquiring conn->lock would invert the\nestablished conn->lock -> chan->lock -> sk_lock order.\n\nInstead of calling l2cap_chan_close() directly, schedule\nl2cap_chan_timeout with delay 0 to close the channel\nasynchronously. The timeout handler already acquires conn->lock\nand chan->lock in the correct order.\n\nThe timer is only armed when chan->conn is still set: if it is\nalready NULL, l2cap_conn_del() has already processed this channel\n(l2cap_chan_del + l2cap_sock_teardown_cb + l2cap_sock_close_cb),\nso there is nothing left to do. If l2cap_conn_del() races in\nafter the timer is armed, __clear_chan_timer() inside\nl2cap_chan_del() cancels it; if the timer has already fired, the\nhandler returns harmlessly because chan->conn was cleared."
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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 vulnerable L2CAP child channels are created and torn down through Bluetooth BR/EDR or LE signaling from a nearby peer, so the remote reachability is adjacent. Bluetooth is not generally Internet-routable, but phones, embedded devices, and kiosks commonly expose this surface to nearby attackers.\nAC:L - The bug is a race, but the attacker can repeatedly create queued L2CAP children and trigger disconnect/cleanup timing; related reports show the listen/close versus HCI-disconnect race reproducing reliably. Under the required rule, the attacker-controlled repeatable race is scored Low complexity.\nPR:N - A nearby Bluetooth peer can reach L2CAP connection setup before application authentication, including low-security/SDP-style services, without an OS account on the target. If a local service lifecycle participates in cleanup, that is target state rather than attacker privilege.\nUI:N - No victim user action such as opening a file or accepting a prompt is required once Bluetooth and a listening L2CAP service are present. The attacker can drive the Bluetooth connection and disconnect attempts directly.\nS:U - The corruption occurs inside the Linux kernel Bluetooth stack and impacts the same kernel security authority. There is no VM escape, IOMMU bypass, or cross-authority boundary change indicated.\nC:H - The old path called l2cap_chan_close() without conn->lock, allowing unlocked removal from conn->chan_l and races with l2cap_conn_del() over sock/l2cap_chan lifetime. This is kernel memory corruption/UAF-adjacent behavior, which is defensibly exploitable for high confidentiality impact.\nI:H - The race can corrupt kernel list/refcount state around l2cap_chan and sock teardown, giving a plausible route to use-after-free style heap manipulation. Kernel memory corruption is scored as high integrity impact under the provided guidance.\nA:H - At minimum, racing channel cleanup and connection deletion can cause list corruption, double teardown, UAF, KASAN splats, oops, or panic. A repeatable kernel crash is high availability impact."
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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_sock.c"
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],
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"versions": [
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{
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"version": "3df91ea20e744344100b10ae69a17211fcf5b207",
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"lessThan": "3634cbdc2eb414b69ffa752ddbe5e0458518e321",
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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": "3df91ea20e744344100b10ae69a17211fcf5b207",
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"lessThan": "e1c100e2d61bd8c718b7d91fe3e050780a9bf72d",
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"status": "affected",
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},
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{
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"version": "3df91ea20e744344100b10ae69a17211fcf5b207",
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"lessThan": "deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9",
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"status": "affected",
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"lessThan": "89dec92041717b027216e110599e4f6d6c921b79",
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"status": "affected",
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},
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"lessThan": "50dfec218808b148ab4247b1858031b7a32015c5",
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"version": "3df91ea20e744344100b10ae69a17211fcf5b207",
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"lessThan": "7555fd885a0603f50e49a655850a1f2bd8a25398",
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"status": "affected",
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{
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"status": "affected",
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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_sock.c"
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],
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"versions": [
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{
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"version": "3.4",
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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": "3.4",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.4",
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"versionEndExcluding": "5.10.259"
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},
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{
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"url": "https://git.kernel.org/stable/c/e1c100e2d61bd8c718b7d91fe3e050780a9bf72d"
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},
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{
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"url": "https://git.kernel.org/stable/c/deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9"
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},
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{
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"url": "https://git.kernel.org/stable/c/89dec92041717b027216e110599e4f6d6c921b79"
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},
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{
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"url": "https://git.kernel.org/stable/c/50dfec218808b148ab4247b1858031b7a32015c5"
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},
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{
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"url": "https://git.kernel.org/stable/c/859d3ace791ed878ae9ba5522c7844d960da8f88"
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},
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{
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"url": "https://git.kernel.org/stable/c/7555fd885a0603f50e49a655850a1f2bd8a25398"
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},
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{
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"url": "https://git.kernel.org/stable/c/8c8e620467a7b51562dbcefbd1f09f288d7d710d"
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}
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],
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"title": "Bluetooth: L2CAP: use chan timer to close channels in cleanup_listen()",
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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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"x_adpType": "supplier",
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"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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"shortName": "siemens-SADP",
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"dateUpdated": "2026-10-15T01:23:22.809Z"
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},
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"affected": [
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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}
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],
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"references": [
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{
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"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
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}
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]
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},
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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-2026-53358",
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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": "2026-10-16T15:28:55.590767Z"
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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-362",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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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": "2026-10-19T20:07:44.244Z"
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}
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}
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]
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}
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} |