298 lines
15 KiB
JSON
298 lines
15 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-2026-80737",
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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": "2026-08-26T14:34:25.789Z",
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"datePublished": "2026-09-03T08:21:52.539Z",
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"dateUpdated": "2026-10-16T19:26:36.178Z"
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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": "2026-09-04T04:58:22.813Z"
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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\nserial: amba-pl011: synchronize DMA teardown\n\ndmaengine_terminate_all() does not wait for a running callback, so the TX\ncallback can still touch the TX buffer after it is freed. The RX poll\ntimer reads the RX buffers without the port lock.\n\nSwitch to dmaengine_terminate_sync() and delete the RX timer before\nfreeing the buffers."
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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:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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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:L - Local tty device access via open/write/close on /dev/ttyAMA* or similar; PL011 DMA teardown runs in pl011_shutdown from uart_close/hangup/suspend, not via network protocols.\nAC:L - Attacker with tty fd controls DMA load (large writes for TX DMA, active RX) and teardown timing via close/hangup; they can repeatedly race shutdown against in-flight DMA callbacks/timers without uncontrollable conditions.\nPR:L - Requires open/write/close on the UART tty node, typically granted via dialout group on embedded ARM systems with PL011 DMA; not via user namespaces alone, but no root required on auxiliary serial ports.\nUI:N - Attacker performs all steps themselves (open port, queue DMA traffic, close); no separate victim action needed.\nS:U - Kernel heap/coherent-buffer UAF during UART driver teardown affects only local kernel resources; no VM escape, IOMMU bypass, or cross-security-authority boundary.\nC:H - TX DMA callback or RX poll timer can access freed TX kmalloc buffer or RX dma coherent pages, yielding UAF read primitives over kernel memory and potential information disclosure.\nI:H - Post-free access via pl011_dma_tx_refill/dma_map or pl011_dma_rx_poll writing into tty flip buffers enables heap corruption and potential kernel code execution or privilege escalation.\nA:H - UAF during DMA teardown can provoke kernel oops/panic from concurrent access to freed buffers, and repeated triggering can deny UART service or crash the host."
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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/tty/serial/amba-pl011.c"
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],
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"versions": [
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{
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"version": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e",
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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": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "44bd0ecc3444882d08ecfbc2b2418d2f463d3186",
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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": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03",
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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": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "c8c8e895f65fbf71ea6224e27cf8dab91b776e0d",
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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": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "9f6989e477f03a4721d34bb4b09b17accd40283e",
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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": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "5974cb66681eac367107b05924744d7e3b49d41c",
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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": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "fdfb46c387241b4eddd36d746793764413285913",
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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": "ead76f329f777c7301e0a5456a0a1c7a081570bd",
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"lessThan": "440915499231e9db1c361aa45bb702e8fd3b4a32",
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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/tty/serial/amba-pl011.c"
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],
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"versions": [
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{
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"version": "2.6.39",
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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": "2.6.39",
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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": "5.10.267",
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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": "5.15.218",
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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": "6.1.185",
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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": "6.6.154",
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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": "6.12.106",
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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": "6.18.45",
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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": "7.1.9",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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": "2.6.39",
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"versionEndExcluding": "5.10.267"
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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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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e"
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},
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{
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"url": "https://git.kernel.org/stable/c/44bd0ecc3444882d08ecfbc2b2418d2f463d3186"
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},
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{
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"url": "https://git.kernel.org/stable/c/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03"
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},
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{
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"url": "https://git.kernel.org/stable/c/c8c8e895f65fbf71ea6224e27cf8dab91b776e0d"
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},
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{
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"url": "https://git.kernel.org/stable/c/9f6989e477f03a4721d34bb4b09b17accd40283e"
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},
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{
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"url": "https://git.kernel.org/stable/c/5974cb66681eac367107b05924744d7e3b49d41c"
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},
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{
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"url": "https://git.kernel.org/stable/c/fdfb46c387241b4eddd36d746793764413285913"
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},
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{
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"url": "https://git.kernel.org/stable/c/440915499231e9db1c361aa45bb702e8fd3b4a32"
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}
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],
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"title": "serial: amba-pl011: synchronize DMA teardown",
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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-2026-80737",
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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": "2026-10-16T19:21:17.321670Z"
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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": "2026-10-16T19:26:36.178Z"
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}
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}
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]
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}
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} |