298 lines
15 KiB
JSON
298 lines
15 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-2025-40277",
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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": "2025-04-16T07:20:57.184Z",
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"datePublished": "2025-12-06T21:51:00.437Z",
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"dateUpdated": "2026-08-05T12:09:09.886Z"
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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": "2026-08-05T12:09:09.886Z"
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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/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE\n\nThis data originates from userspace and is used in buffer offset\ncalculations which could potentially overflow causing an out-of-bounds\naccess."
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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 reached only through the DRM_IOCTL_VMW_EXECBUF ioctl on the local vmwgfx device/render node (/dev/dri/renderD*), requiring local system access. There is no network or remote path into the command verifier.\nAC:L - The attacker fully and deterministically controls header->size in the command stream they submit; setting it to 0xFFFFFFF8..0xFFFFFFFF reliably wraps the 32-bit size computation and bypasses the size_remaining check every time. No race, timing window, or uncontrollable precondition is involved.\nPR:L - VMW_EXECBUF is declared DRM_RENDER_ALLOW and vmwgfx sets DRIVER_RENDER, so no DRM master or authentication is needed — any unprivileged local user with access to the render node (standard for graphics/desktop users and containers in VMware guests) can submit commands.\nUI:N - The attacker triggers the flaw entirely on their own by issuing the execbuf ioctl with a crafted SVGA3D command header. No victim action or interaction is required.\nS:U - The integer overflow and the resulting out-of-bounds accesses occur within the guest kernel's own address space and are confined to the kernel's security authority. No hypervisor, IOMMU, or sandbox boundary is crossed by the kernel-side defect itself.\nC:H - The unchecked header->size drives pointer arithmetic in vmw_cmd_dma(), vmw_cmd_draw(), and vmw_cmd_tex_state(), producing large out-of-bounds reads of adjacent kernel memory whose contents are interpreted as resource handles; success/failure of vmw_user_resource_lookup_handle() forms a scanning oracle over kernel heap contents, so arbitrary kernel memory disclosure is achievable.\nI:H - The same overflow yields out-of-bounds writes — vmw_cmd_dma() writes bo_size into suffix->maximumOffset past the buffer, and OOB-derived relocation offsets cause vmw_resource_relocations_apply() to write 32-bit resource IDs outside the command buffer. Controlled heap corruption of this kind is a standard path to privilege escalation.\nA:H - A header->size of 0xFFFFFFF8 makes *size zero, causing vmw_cmd_check_all() to spin forever while holding dev_priv->cmdbuf_mutex, and the far out-of-bounds reads past a vmalloc'd bounce buffer hit a guard page and oops the kernel. Either outcome is a full denial of service."
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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/gpu/drm/vmwgfx/vmwgfx_execbuf.c"
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],
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"versions": [
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{
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"version": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "e58559845021c3bad5e094219378b869157fad53",
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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": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "54d458b244893e47bda52ec3943fdfbc8d7d068b",
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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": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173",
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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": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "a3abb54c27b2c393c44362399777ad2f6e1ff17e",
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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": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "b5df9e06eed3df6a4f5c6f8453013b0cabb927b4",
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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": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc",
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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": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0",
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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": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f",
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"lessThan": "32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af",
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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/gpu/drm/vmwgfx/vmwgfx_execbuf.c"
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],
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"versions": [
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{
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"version": "4.3",
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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": "4.3",
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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": "5.4.302",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.247",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.197",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.159",
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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": "6.6.117",
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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": "6.12.59",
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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": "6.17.9",
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"lessThanOrEqual": "6.17.*",
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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",
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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": "4.3",
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"versionEndExcluding": "5.4.302"
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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": "4.3",
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"versionEndExcluding": "5.10.247"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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/e58559845021c3bad5e094219378b869157fad53"
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},
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{
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"url": "https://git.kernel.org/stable/c/54d458b244893e47bda52ec3943fdfbc8d7d068b"
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},
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{
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"url": "https://git.kernel.org/stable/c/709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173"
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},
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{
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"url": "https://git.kernel.org/stable/c/a3abb54c27b2c393c44362399777ad2f6e1ff17e"
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},
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{
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"url": "https://git.kernel.org/stable/c/b5df9e06eed3df6a4f5c6f8453013b0cabb927b4"
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},
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{
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"url": "https://git.kernel.org/stable/c/5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc"
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},
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{
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"url": "https://git.kernel.org/stable/c/f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0"
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},
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{
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"url": "https://git.kernel.org/stable/c/32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af"
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}
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],
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"title": "drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE",
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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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"timestamp": "2026-06-16T19:51:12.603019Z",
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"id": "CVE-2025-40277",
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2026-06-16T19:51:24.946Z"
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}
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}
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]
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}
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} |