221 lines
12 KiB
JSON
221 lines
12 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-2025-21901",
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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": "2024-12-29T08:45:45.785Z",
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"datePublished": "2025-04-01T15:26:51.807Z",
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"dateUpdated": "2026-08-05T11:55:16.513Z"
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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": "2026-08-05T11:55:16.513Z"
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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\nRDMA/bnxt_re: Add sanity checks on rdev validity\n\nThere is a possibility that ulp_irq_stop and ulp_irq_start\ncallbacks will be called when the device is in detached state.\nThis can cause a crash due to NULL pointer dereference as\nthe rdev is already freed."
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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 - The vulnerable callbacks are driven by local device-management and error-recovery paths (ethtool ring/channel reconfiguration, devlink/FW reset, SR-IOV reconfiguration, PM suspend/resume, PCIe AER), not by data received from a remote peer. A remote RoCE/Ethernet peer cannot reach `bnxt_re_stop_irq()`/`bnxt_re_start_irq()`.\nAC:L - In the AER and FW-recovery sequences the L2 driver unconditionally calls `bnxt_ulp_irq_stop()`/`bnxt_ulp_irq_restart()` after `bnxt_ulp_stop()` has already freed `rdev`, so the stale-pointer dereference is deterministic rather than racy. Where a window must be hit, the attacker drives both sides — initiating the reset/suspend and issuing the ring-reservation request that calls `bnxt_ulp_irq_stop()`.\nPR:L - Entering the detached window needs only an unprivileged-reachable action such as a logind-permitted system suspend/resume cycle, or a CAP_NET_ADMIN-scoped ethtool ring/channel reconfiguration available to non-root network workloads; once detached, the use-after-free fires from the driver's own recovery path with no further privilege. It does not require full root in the initial namespace.\nUI:N - No victim action is needed — the free and the subsequent dereference both occur inside the driver's suspend/irq-restart sequence once the reset or suspend is under way.\nS:U - The corruption is confined to kernel memory within the same security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - This is a use-after-free on the freed `bnxt_re_dev`: `bnxt_re_start_irq()` reads `rdev->nqr` and `rdev->nqr->num_msix` out of the freed slab, so an attacker who reclaims the object controls a pointer that is then followed, yielding an arbitrary-read primitive and disclosure of kernel memory.\nI:H - `bnxt_re_stop_irq()` performs `set_bit()` writes directly into the freed object and `wake_up_all()` walks a wait-queue list from freed memory invoking `wq_entry->func()`, while `bnxt_re_start_irq()` writes `rdev->nqr->msix_entries[indx].vector` through a pointer read from the freed slab — together a write-what-where and control-flow hijack primitive.\nA:H - Even without heap grooming the dereference of the freed `rdev` (typically a NULL `rdev->nqr` or poisoned contents) causes a kernel oops/panic, and it occurs precisely during firmware/PCIe error recovery, turning a recoverable device fault into a full 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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"drivers/infiniband/hw/bnxt_re/main.c"
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],
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"versions": [
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{
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"version": "cc5b9b48d44756a87170f3901c6c2fd99e6b89b2",
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"lessThan": "aed1bc673907e3df372b317c10ff2f3582f8bf1a",
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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": "cc5b9b48d44756a87170f3901c6c2fd99e6b89b2",
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"lessThan": "8cb0eef46d70a99c88c26a1addb7fd955242e0e6",
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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": "cc5b9b48d44756a87170f3901c6c2fd99e6b89b2",
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"lessThan": "f0df225d12fcb049429fb5bf5122afe143c2dd15",
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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/infiniband/hw/bnxt_re/main.c"
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],
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"versions": [
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{
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"version": "6.12",
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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": "6.12",
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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": "6.12.18",
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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": "6.13.6",
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"lessThanOrEqual": "6.13.*",
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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": "6.14",
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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": "6.12",
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"versionEndExcluding": "6.12.18"
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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": "6.12",
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"versionEndExcluding": "6.13.6"
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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": "6.12",
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"versionEndExcluding": "6.14"
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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/aed1bc673907e3df372b317c10ff2f3582f8bf1a"
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},
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{
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"url": "https://git.kernel.org/stable/c/8cb0eef46d70a99c88c26a1addb7fd955242e0e6"
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},
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{
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"url": "https://git.kernel.org/stable/c/f0df225d12fcb049429fb5bf5122afe143c2dd15"
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}
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],
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"title": "RDMA/bnxt_re: Add sanity checks on rdev validity",
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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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-2025-21901",
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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": "2025-10-01T19:24:32.667966Z"
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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-476",
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"description": "CWE-476 NULL Pointer Dereference"
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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": "2025-10-01T19:26:35.142Z"
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}
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}
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]
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}
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} |