256 lines
13 KiB
JSON
256 lines
13 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-2022-48899",
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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": "2024-08-21T06:06:23.291Z",
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"datePublished": "2024-08-21T06:10:31.936Z",
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"dateUpdated": "2026-08-05T08:52:50.499Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:52:50.499Z"
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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\ndrm/virtio: Fix GEM handle creation UAF\n\nUserspace can guess the handle value and try to race GEM object creation\nwith handle close, resulting in a use-after-free if we dereference the\nobject after dropping the handle's reference. For that reason, dropping\nthe handle's reference must be done *after* we are done dereferencing\nthe object."
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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 - Reachable only via local DRM ioctls (VIRTGPU_RESOURCE_CREATE / RESOURCE_CREATE_BLOB and GEM_CLOSE) on `/dev/dri/renderD*` or the primary node; not via network packet processing.\nAC:L - The attacker controls both sides of the race—issuing resource-create while another thread closes a predicted sequential GEM handle IDR value—so success does not depend on external conditions beyond attacker influence.\nPR:L - The vulnerable ioctls are marked DRM_RENDER_ALLOW and require only an open render/primary DRM fd, which unprivileged users routinely have; no CAP_SYS_ADMIN or DRM master is required.\nUI:N - The attacker triggers the bug entirely with their own ioctl calls; no separate victim action is needed.\nS:U - The UAF corrupts guest-kernel GEM object state and enables privilege escalation within the same kernel security authority; it is not a guest-to-host/VM escape.\nC:H - Use-after-free of the GEM object after the handle’s last reference is dropped enables reclaim/spray and arbitrary kernel memory disclosure, including values returned to userspace via res_handle.\nI:H - The same UAF provides a heap corruption primitive that can be turned into arbitrary write / control-flow hijacking in the kernel.\nA:H - Dereferencing the freed GEM object can oops/panic the kernel 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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"product": "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/gpu/drm/virtio/virtgpu_ioctl.c"
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],
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"lessThan": "19ec87d06acfab2313ee82b2a689bf0c154e57ea",
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"status": "affected",
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"programFiles": [
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"drivers/gpu/drm/virtio/virtgpu_ioctl.c"
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],
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"versions": [
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{
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"version": "4.4",
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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": "4.4",
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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": "4.19.270",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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},
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},
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{
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"version": "5.10.164",
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},
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{
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"version": "5.15.89",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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},
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{
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"version": "6.1.7",
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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": "6.2",
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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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"references": [
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"url": "https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57ea"
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"url": "https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438e"
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}
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],
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"title": "drm/virtio: Fix GEM handle creation UAF",
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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-2022-48899",
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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": "2024-09-10T16:03:56.343879Z"
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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": "2024-09-12T17:33:15.193Z"
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}
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}
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]
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}
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} |