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-2026-64587",
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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": "2026-07-19T15:36:31.798Z",
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"datePublished": "2026-08-06T07:06:27.765Z",
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"dateUpdated": "2026-08-08T15:13:24.903Z"
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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": "2026-08-08T15:13:24.903Z"
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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\nnet: ethernet: arc: emac: quiesce interrupts before requesting IRQ\n\nNormal RX/TX interrupts are enabled later, in arc_emac_open(), so probe\nshould not see interrupt delivery in the usual case. However, hardware may\nstill present stale or latched interrupt status left by firmware or the\nbootloader.\n\nIf probe later unwinds after devm_request_irq() has installed the handler,\nsuch a stale interrupt can still reach arc_emac_intr() during teardown and\nrace with release of the associated net_device.\n\nAvoid that window by putting the device into a known quiescent state before\nrequesting the IRQ: disable all EMAC interrupt sources and clear any\npending EMAC interrupt status bits. This keeps the change hardware-focused\nand minimal, while preventing spurious IRQ delivery from leftover state."
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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:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7,
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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:L - The flaw is in ARC/Rockchip EMAC platform probe/teardown (arc_emac_probe → free_netdev while the devm IRQ remains), not in packet processing; a remote or adjacent peer cannot induce this path via Ethernet frames.\nAC:H - Exploitation needs leftover firmware/bootloader-latched EMAC IRQ state plus a post-request_irq probe failure overlapping interrupt delivery; the attacker does not control that hardware/firmware precondition or IRQ timing.\nPR:L - An unprivileged local user can drive post-request_irq failures such as dmam_alloc_coherent -ENOMEM via memory pressure during deferred probe after userspace is up; platform bind/unbind is root-only but is not required for this path.\nUI:N - No victim action is required; once leftover IRQ state exists, the attacker can induce probe failure and race teardown without another user opening or configuring the interface.\nS:U - Impact is use-after-free/corruption inside the host kernel EMAC interrupt path and does not cross a VM, IOMMU, or other separate security authority.\nC:H - arc_emac_intr can run on a freed or half-initialized net_device (netdev_priv, NAPI, stats), a use-after-free that can expose attacker-influenced kernel heap contents.\nI:H - The same UAF lets the IRQ handler write through reclaimed net_device/NAPI state (e.g. napi_schedule), enabling heap corruption and potential control-flow hijacking.\nA:H - Dereferencing freed or uninitialized NAPI/netdev state in IRQ context can oops or panic the kernel, causing full denial of service."
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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/ethernet/arc/emac_main.c"
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],
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"versions": [
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{
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"version": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "abd338da658d7faa8e26cfefc8f83f0066707564",
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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": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "5f29dd540fe5ea3c826fc8ec759ba488b31f9707",
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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": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "6fc7449773748c7b904235a09a67054d78ab1172",
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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": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "81431da777924dddaefa5c9b0ca9da4a93f9df96",
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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": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "d0f2386f529807826e7404d40a245ee428f89f62",
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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": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "8efd5dcd31e22a9308b16b107a052fcd568c0a99",
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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": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "8f9adb3605e36f75639de529bb3d66e94194a388",
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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": "e4f2379db6c6823c5d4a4c2c912df00c65de51d7",
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"lessThan": "2503d08f8a2de618e5c3a8183b250ff4a2e2d52c",
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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/ethernet/arc/emac_main.c"
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],
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"versions": [
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{
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"version": "3.11",
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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": "3.11",
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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": "6.18.19",
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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": "6.19.9",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.11",
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"versionEndExcluding": "5.10.253"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564"
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},
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{
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"url": "https://git.kernel.org/stable/c/5f29dd540fe5ea3c826fc8ec759ba488b31f9707"
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},
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{
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"url": "https://git.kernel.org/stable/c/6fc7449773748c7b904235a09a67054d78ab1172"
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},
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{
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"url": "https://git.kernel.org/stable/c/81431da777924dddaefa5c9b0ca9da4a93f9df96"
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},
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{
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"url": "https://git.kernel.org/stable/c/d0f2386f529807826e7404d40a245ee428f89f62"
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},
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{
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"url": "https://git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99"
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},
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{
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"url": "https://git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388"
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},
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{
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"url": "https://git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c"
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}
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],
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"title": "net: ethernet: arc: emac: quiesce interrupts before requesting IRQ",
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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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} |