{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48899", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-21T06:06:23.291Z", "datePublished": "2024-08-21T06:10:31.936Z", "dateUpdated": "2026-08-05T08:52:50.499Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:52:50.499Z" }, "descriptions": [ { "lang": "en", "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." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/virtio/virtgpu_ioctl.c" ], "versions": [ { "version": "62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257", "lessThan": "19ec87d06acfab2313ee82b2a689bf0c154e57ea", "status": "affected", "versionType": "git" }, { "version": "62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257", "lessThan": "d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73", "status": "affected", "versionType": "git" }, { "version": "62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257", "lessThan": "68bcd063857075d2f9edfed6024387ac377923e2", "status": "affected", "versionType": "git" }, { "version": "62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257", "lessThan": "011ecdbcd520c90c344b872ca6b4821f7783b2f8", "status": "affected", "versionType": "git" }, { "version": "62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257", "lessThan": "adc48e5e408afbb01d261bd303fd9fbbbaa3e317", "status": "affected", "versionType": "git" }, { "version": "62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257", "lessThan": "52531258318ed59a2dc5a43df2eaf0eb1d65438e", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/virtio/virtgpu_ioctl.c" ], "versions": [ { "version": "4.4", "status": "affected" }, { "version": "0", "lessThan": "4.4", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.164", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.89", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.7", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.10.164" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.15.89" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.1.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57ea" }, { "url": "https://git.kernel.org/stable/c/d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73" }, { "url": "https://git.kernel.org/stable/c/68bcd063857075d2f9edfed6024387ac377923e2" }, { "url": "https://git.kernel.org/stable/c/011ecdbcd520c90c344b872ca6b4821f7783b2f8" }, { "url": "https://git.kernel.org/stable/c/adc48e5e408afbb01d261bd303fd9fbbbaa3e317" }, { "url": "https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438e" } ], "title": "drm/virtio: Fix GEM handle creation UAF", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-48899", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:03:56.343879Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:15.193Z" } } ] } }