219 lines
10 KiB
JSON
219 lines
10 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-2026-43319",
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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": "2026-05-01T14:12:56.001Z",
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"datePublished": "2026-05-08T13:26:14.231Z",
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"dateUpdated": "2026-11-06T15:42:48.674Z"
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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": "2026-06-01T16:15:35.875Z"
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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\nspi: spidev: fix lock inversion between spi_lock and buf_lock\n\nThe spidev driver previously used two mutexes, spi_lock and buf_lock,\nbut acquired them in different orders depending on the code path:\n\n write()/read(): buf_lock -> spi_lock\n ioctl(): spi_lock -> buf_lock\n\nThis AB-BA locking pattern triggers lockdep warnings and can\ncause real deadlocks:\n\n WARNING: possible circular locking dependency detected\n spidev_ioctl() -> mutex_lock(&spidev->buf_lock)\n spidev_sync_write() -> mutex_lock(&spidev->spi_lock)\n *** DEADLOCK ***\n\nThe issue is reproducible with a simple userspace program that\nperforms write() and SPI_IOC_WR_MAX_SPEED_HZ ioctl() calls from\nseparate threads on the same spidev file descriptor.\n\nFix this by simplifying the locking model and removing the lock\ninversion entirely. spidev_sync() no longer performs any locking,\nand all callers serialize access using spi_lock.\n\nbuf_lock is removed since its functionality is fully covered by\nspi_lock, eliminating the possibility of lock ordering issues.\n\nThis removes the lock inversion and prevents deadlocks without\nchanging userspace ABI or behaviour."
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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/spi/spidev.c"
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],
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"versions": [
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{
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"version": "a720416d94634068951773cb9e9d6f1b73769e5b",
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"lessThan": "fabfed1afe273717ea33b8aee46b767360edbb80",
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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": "a720416d94634068951773cb9e9d6f1b73769e5b",
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"lessThan": "f8431b8672231d378b03176fe74c95adfd3522cf",
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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": "a720416d94634068951773cb9e9d6f1b73769e5b",
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"lessThan": "e341e18215030af2136836b78508e0d798916df7",
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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": "a720416d94634068951773cb9e9d6f1b73769e5b",
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"lessThan": "41ccfac7d302968a4f32b5f7b012d066c5f5cdf8",
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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": "a720416d94634068951773cb9e9d6f1b73769e5b",
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"lessThan": "40534d19ed2afb880ecf202dab26a8e7a5808d16",
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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/spi/spidev.c"
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],
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"versions": [
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{
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"version": "6.2",
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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": "6.2",
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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": "6.6.142",
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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": "6.12.75",
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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": "6.18.16",
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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": "6.19.6",
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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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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.2",
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"versionEndExcluding": "6.6.142"
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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": "6.2",
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"versionEndExcluding": "6.12.75"
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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": "6.2",
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"versionEndExcluding": "6.18.16"
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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": "6.2",
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"versionEndExcluding": "6.19.6"
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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": "6.2",
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"versionEndExcluding": "7.0"
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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/fabfed1afe273717ea33b8aee46b767360edbb80"
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},
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{
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"url": "https://git.kernel.org/stable/c/f8431b8672231d378b03176fe74c95adfd3522cf"
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},
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{
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"url": "https://git.kernel.org/stable/c/e341e18215030af2136836b78508e0d798916df7"
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},
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{
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"url": "https://git.kernel.org/stable/c/41ccfac7d302968a4f32b5f7b012d066c5f5cdf8"
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},
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{
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"url": "https://git.kernel.org/stable/c/40534d19ed2afb880ecf202dab26a8e7a5808d16"
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}
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],
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"title": "spi: spidev: fix lock inversion between spi_lock and buf_lock",
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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-2026-43319",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-06T15:35:34.477270Z"
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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": "2026-11-06T15:42:48.674Z"
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}
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}
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]
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}
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} |