{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-40111", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.167Z", "datePublished": "2025-11-12T01:07:25.203Z", "dateUpdated": "2026-08-05T12:07:51.842Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:07:51.842Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Fix Use-after-free in validation\n\nNodes stored in the validation duplicates hashtable come from an arena\nallocator that is cleared at the end of vmw_execbuf_process. All nodes\nare expected to be cleared in vmw_validation_drop_ht but this node escaped\nbecause its resource was destroyed prematurely." } ], "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 - The vulnerability is reached only through `DRM_IOCTL_VMW_EXECBUF` on the vmwgfx DRM device node, which requires local execution to issue ioctls. There is no network or adjacent-network path into the command-submission validation code.\nAC:L - The attacker controls both sides of the race — one thread loops `vmw_execbuf_ioctl()` over a DX context with bound resources while another destroys a bound view/shader/surface — and the window is widened because `vmw_resource_release()` drops the kref and then blocks on `binding_mutex` that the execbuf walker already holds. The attempt is infinitely repeatable, and a single success permanently poisons the device-global `res_ht`.\nPR:L - `DRM_IOCTL_VMW_EXECBUF` is marked `DRM_RENDER_ALLOW`, so any unprivileged local user holding an fd on `/dev/dri/renderD*` (the default for logged-in desktop users, GPU-enabled containers, and sandboxed GPU processes in VMware guests) can reach it. No capability, DRM master status, or authentication is needed.\nUI:N - The attacking process drives both the execbuf submission and the concurrent resource destruction entirely on its own via ioctls. No action by another user or administrator is required.\nS:U - The corruption is confined to the guest kernel's own memory within the same security authority; no hypervisor, IOMMU, or VM boundary is crossed even though vmwgfx is a paravirtual GPU driver.\nC:H - The stale hlist entry points into a page freed to the buddy allocator, so subsequent `hash_for_each_possible_rcu()` walks read attacker-groomed memory; a matching sprayed `hash->key` yields a fully fabricated `vmw_validation_res_node` whose `private` data is consumed as `struct vmw_ctx_validation_info` pointers, enabling arbitrary kernel memory disclosure.\nI:H - `hash_add_rcu()` writes a kernel pointer into the freed page through the dangling node's `pprev`, and a sprayed fake node supplies attacker-controlled `res`, `ctx`, and binding-state pointers that the binding/validation code dereferences and writes through — a use-after-free with both write and control-flow-hijack primitives.\nA:H - The dangling hash entry survives in the device-global `res_ht` and is traversed by every later execbuf from any process on that device, so a single trigger reliably produces list corruption and oopses/panics affecting the whole system." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/vmwgfx/vmwgfx_validation.c" ], "versions": [ { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "1822e5287b7dfa59d0af966756ebf1dc652b60ee", "status": "affected", "versionType": "git" }, { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "fb7165e5f3b3b10721ff70553583ad12e90e447a", "status": "affected", "versionType": "git" }, { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "4c918f9d1ccccc0e092f43dcb2d8266f54d7340b", "status": "affected", "versionType": "git" }, { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "9a8eaca539708ca532747f606d231f70e684e8ca", "status": "affected", "versionType": "git" }, { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "867bda5d95d36f10da398fd4409e21c7002b2332", "status": "affected", "versionType": "git" }, { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "655a2f29bfc21105c80bf8a7d7aafa6eca8b4496", "status": "affected", "versionType": "git" }, { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "65608e991c2d771c13404e5c7ae122ac3c3357a4", "status": "affected", "versionType": "git" }, { "version": "64ad2abfe9a628ce79859d072704bd1ef7682044", "lessThan": "dfe1323ab3c8a4dd5625ebfdba44dc47df84512a", "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/vmwgfx/vmwgfx_validation.c" ], "versions": [ { "version": "4.20", "status": "affected" }, { "version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.301", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.246", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.195", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.157", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.113", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.54", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.4", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18", "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": "4.20", "versionEndExcluding": "5.4.301" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.10.246" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.15.195" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6.113" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.12.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.17.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.18" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1822e5287b7dfa59d0af966756ebf1dc652b60ee" }, { "url": "https://git.kernel.org/stable/c/fb7165e5f3b3b10721ff70553583ad12e90e447a" }, { "url": "https://git.kernel.org/stable/c/4c918f9d1ccccc0e092f43dcb2d8266f54d7340b" }, { "url": "https://git.kernel.org/stable/c/9a8eaca539708ca532747f606d231f70e684e8ca" }, { "url": "https://git.kernel.org/stable/c/867bda5d95d36f10da398fd4409e21c7002b2332" }, { "url": "https://git.kernel.org/stable/c/655a2f29bfc21105c80bf8a7d7aafa6eca8b4496" }, { "url": "https://git.kernel.org/stable/c/65608e991c2d771c13404e5c7ae122ac3c3357a4" }, { "url": "https://git.kernel.org/stable/c/dfe1323ab3c8a4dd5625ebfdba44dc47df84512a" } ], "title": "drm/vmwgfx: Fix Use-after-free in validation", "x_generator": { "engine": "bippy-1.2.0" } } } }