164 lines
8.2 KiB
JSON
164 lines
8.2 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-2026-98949",
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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": "2026-09-25T10:25:14.382Z",
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"datePublished": "2026-10-23T12:19:08.946Z",
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"dateUpdated": "2026-10-23T12:19:08.946Z"
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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": "2026-10-23T12:19:08.946Z"
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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/imagination: Fix reference and vm_bo handling in remap()\n\nWhen a map overlaps part of an existing mapping, pvr_vm_gpuva_remap()\nsplits the mapping into prev/next parts covering what the request did\nnot take, instead of creating something new. It gets two things wrong.\n\n- A GEM reference is taken for each part but it's never needed and never\n dropped, so it leaks one reference per split (remap-next-in-2m in\n tests/imagination/pvr_vm_map.c):\n\n CRITICAL: 33558528 bytes of shmem still held after close\n\n- The parts still belong to the original object being split, but\n pvr_vm_gpuva_remap() links them to ctx->gpuvm_bo, the new object's\n vm_bo:\n\n prev_va --obj--> BO_A BO_B <--obj-- vm_bo (ctx->gpuvm_bo)\n \\___________link___________/ (mismatch: BO_A != BO_B)\n\n drm_gpuva_link() catches the mismatch:\n\n WARNING: drivers/gpu/drm/drm_gpuvm.c:2108 at drm_gpuva_link+0x2ec/0x310\n drm_WARN_ON(obj != vm_bo->obj)\n Call trace:\n drm_gpuva_link\n pvr_vm_gpuva_remap\n __drm_gpuvm_sm_map\n pvr_vm_map\n pvr_ioctl_vm_map\n\n Link them to op->remap.unmap->va->vm_bo instead.\n\nThe locking of the GPUVA lists of the other objects touched by a split is\nnot addressed here; it is handled by switching the GPUVM to immediate\nmode."
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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/imagination/pvr_vm.c"
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],
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"versions": [
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{
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"version": "ff5f643de0bf27874c4033cd57a0bd034b5c7d11",
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"lessThan": "521cf8403a185a9d5790fe324bb43ba7ea85f51c",
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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": "ff5f643de0bf27874c4033cd57a0bd034b5c7d11",
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"lessThan": "9caa2eca5cc8372517ff36a83f321d4326abae93",
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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": "ff5f643de0bf27874c4033cd57a0bd034b5c7d11",
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"lessThan": "784356aa88b82035d70e9faeded49b70cddeb29e",
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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": "ff5f643de0bf27874c4033cd57a0bd034b5c7d11",
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"lessThan": "196d4d10c1b33ae176685ff42a9994a5952b1d0f",
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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/imagination/pvr_vm.c"
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],
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"versions": [
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{
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"version": "6.8",
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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": "6.8",
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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": "6.12.113",
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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": "6.18.57",
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"lessThanOrEqual": "6.18.*",
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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": "7.2.11",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "6.8",
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"versionEndExcluding": "6.12.113"
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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": "6.8",
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"versionEndExcluding": "6.18.57"
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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": "6.8",
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"versionEndExcluding": "7.2.11"
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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": "6.8",
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"versionEndExcluding": "7.3"
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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/521cf8403a185a9d5790fe324bb43ba7ea85f51c"
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},
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{
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"url": "https://git.kernel.org/stable/c/9caa2eca5cc8372517ff36a83f321d4326abae93"
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},
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{
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"url": "https://git.kernel.org/stable/c/784356aa88b82035d70e9faeded49b70cddeb29e"
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},
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{
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"url": "https://git.kernel.org/stable/c/196d4d10c1b33ae176685ff42a9994a5952b1d0f"
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}
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],
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"title": "drm/imagination: Fix reference and vm_bo handling in remap()",
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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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}
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} |