234 lines
11 KiB
JSON
234 lines
11 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-2023-52926",
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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": "2024-08-21T06:07:11.018Z",
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"datePublished": "2025-02-24T09:01:19.209Z",
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"dateUpdated": "2026-08-05T09:12:04.609Z"
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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": "2026-08-05T09:12:04.609Z"
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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\nIORING_OP_READ did not correctly consume the provided buffer list when\nread i/o returned < 0 (except for -EAGAIN and -EIOCBQUEUED return).\nThis can lead to a potential use-after-free when the completion via\nio_rw_done runs at separate context."
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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 bug is in io_uring IORING_OP_READ handling, reachable only via local syscalls (io_uring_setup/io_uring_enter), not via network packet processing.\nAC:L - An unprivileged attacker can reliably trigger the bad path by registering provided buffers and submitting IORING_OP_READ that fails with an error other than -EAGAIN/-EIOCBQUEUED; any race with async io_rw_done task-work is attacker-controlled.\nPR:L - io_uring is usable by unprivileged users by default (sysctl kernel.io_uring_disabled=0); no CAP_SYS_ADMIN or init-namespace root is required.\nUI:N - The attacker submits their own io_uring SQEs and provided buffers; no victim action is required.\nS:U - This is kernel memory corruption within the host kernel's authority (local privilege escalation), not a VM escape or IOMMU/security-boundary crossover.\nC:H - CVE documents a use-after-free on provided buffer list mishandling; UAF enables control of freed object contents and arbitrary kernel memory disclosure.\nI:H - Kernel UAF on provided buffers is exploitable for heap reuse and arbitrary write/control-flow hijacking, enabling privilege escalation.\nA:H - Use-after-free in io_uring completion can cause kernel oops/panic even when not fully exploited for code execution."
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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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"io_uring/rw.c"
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],
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"versions": [
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{
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"version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
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"lessThan": "72060434a14caea20925e492310d6e680e3f9007",
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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": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
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"lessThan": "6c27fc6a783c8a77c756dd5461b15e465020d075",
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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": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
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"lessThan": "a08d195b586a217d76b42062f88f375a3eedda4d",
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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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"io_uring/rw.c"
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],
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"versions": [
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{
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"version": "5.1",
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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": "5.1",
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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": "6.1.122",
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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": "6.6.68",
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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": "6.7",
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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": "5.1",
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"versionEndExcluding": "6.1.122"
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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": "5.1",
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"versionEndExcluding": "6.6.68"
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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": "5.1",
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"versionEndExcluding": "6.7"
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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/72060434a14caea20925e492310d6e680e3f9007"
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},
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{
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"url": "https://git.kernel.org/stable/c/6c27fc6a783c8a77c756dd5461b15e465020d075"
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},
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{
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"url": "https://git.kernel.org/stable/c/a08d195b586a217d76b42062f88f375a3eedda4d"
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}
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],
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"title": "io_uring/rw: split io_read() into a helper",
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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": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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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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"integrityImpact": "HIGH",
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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": "HIGH"
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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-2023-52926",
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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": "2025-02-25T16:27:48.354683Z"
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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-416",
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"description": "CWE-416 Use After Free"
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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": "2025-02-25T17:35:11.949Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T20:36:19.914Z"
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}
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}
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]
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}
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} |