{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38412", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.013Z", "datePublished": "2025-07-25T13:20:16.688Z", "dateUpdated": "2026-08-05T12:01:41.721Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:01:41.721Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks\n\nAfter retrieving WMI data blocks in sysfs callbacks, check for the\nvalidity of them before dereferencing their content." } ], "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 a sysfs file read on the local machine (`/sys/class/firmware-attributes/dell-wmi-sysman/...`), which requires local access to the system. There is no network, adjacent-network, or physical-only path to `is_enabled_show()`/`current_value_show()`.\nAC:L - On an affected Dell/Alienware system whose firmware returns a non-package or short WMI data block, a single `cat` of the sysfs file deterministically and repeatably hits the unvalidated dereference — no race to win, no memory-layout grooming, and no state the attacker must wait for. The attack can be repeated arbitrarily to re-trigger the fault or harvest additional leaked bytes.\nPR:L - `passobj-attributes.c` exposes `is_enabled` via `__ATTR_RO()`, i.e. mode 0444, so any unprivileged local user can read it and drive `is_enabled_show()` into the unchecked `obj->package.elements[IS_PASS_SET]` dereference; only a basic user account is needed, not root.\nUI:N - The attacker performs the triggering read themselves via an ordinary open()/read() on the world-readable sysfs attribute. No victim action, no privileged helper, and no administrator interaction is required.\nS:U - The out-of-bounds read, wild-pointer dereference, and any resulting crash all occur inside the kernel of the same system, managed by the same security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The type confusion turns a firmware-supplied 64-bit value (or a string/buffer data pointer) into the `elements` array base, yielding an out-of-bounds — effectively arbitrary-address — kernel read whose result is then formatted with `snprintf(\"%s\"/\"%lld\")` straight into the sysfs buffer returned to userspace. Because the vulnerable `is_enabled` attribute is world-readable, an unprivileged user obtains a repeatable kernel memory disclosure primitive.\nI:H - This is a genuine type confusion — a `union acpi_object` of type Integer/String/Buffer is interpreted as a Package, so an attacker-influencable firmware value is consumed as a kernel pointer and indexed. Per the type-confusion classification, and given that a firmware-controlled pointer dereference in a driver that also performs BIOS attribute and password-object operations undermines the integrity of the kernel's view of that data, this is scored High.\nA:H - Dereferencing the confused `elements` pointer (an arbitrary firmware integer, or an out-of-bounds address past a buffer/short package) reliably produces an unhandled page fault and kernel oops/panic, and the subsequent `%s` dereference of an out-of-bounds `string.pointer` compounds this. Any local user can trigger it on demand by reading the 0444 `is_enabled` file, making it a repeatable full denial of service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/platform/x86/dell/dell-wmi-sysman/dell-wmi-sysman.h", "drivers/platform/x86/dell/dell-wmi-sysman/enum-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/int-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/passobj-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/string-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/sysman.c" ], "versions": [ { "version": "e8a60aa7404bfef37705da5607c97737073ac38d", "lessThan": "92c2d914b5337431d885597a79a3a3d9d55e80b7", "status": "affected", "versionType": "git" }, { "version": "e8a60aa7404bfef37705da5607c97737073ac38d", "lessThan": "68e9963583d11963ceca5d276e9c44684509f759", "status": "affected", "versionType": "git" }, { "version": "e8a60aa7404bfef37705da5607c97737073ac38d", "lessThan": "0deb3eb78ebf225cb41aa9b2b2150f46cbfd359e", "status": "affected", "versionType": "git" }, { "version": "e8a60aa7404bfef37705da5607c97737073ac38d", "lessThan": "5df3b870bc389a1767c72448a3ce1c576ef4deab", "status": "affected", "versionType": "git" }, { "version": "e8a60aa7404bfef37705da5607c97737073ac38d", "lessThan": "aaf847dcb4114fe8b25d4c1c790bedcb6088cb3d", "status": "affected", "versionType": "git" }, { "version": "e8a60aa7404bfef37705da5607c97737073ac38d", "lessThan": "eb617dd25ca176f3fee24f873f0fd60010773d67", "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/platform/x86/dell/dell-wmi-sysman/dell-wmi-sysman.h", "drivers/platform/x86/dell/dell-wmi-sysman/enum-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/int-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/passobj-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/string-attributes.c", "drivers/platform/x86/dell/dell-wmi-sysman/sysman.c" ], "versions": [ { "version": "5.11", "status": "affected" }, { "version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.187", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.144", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.97", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.37", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.6", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "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": "5.11", "versionEndExcluding": "5.15.187" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.1.144" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.6.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.12.37" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.15.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/92c2d914b5337431d885597a79a3a3d9d55e80b7" }, { "url": "https://git.kernel.org/stable/c/68e9963583d11963ceca5d276e9c44684509f759" }, { "url": "https://git.kernel.org/stable/c/0deb3eb78ebf225cb41aa9b2b2150f46cbfd359e" }, { "url": "https://git.kernel.org/stable/c/5df3b870bc389a1767c72448a3ce1c576ef4deab" }, { "url": "https://git.kernel.org/stable/c/aaf847dcb4114fe8b25d4c1c790bedcb6088cb3d" }, { "url": "https://git.kernel.org/stable/c/eb617dd25ca176f3fee24f873f0fd60010773d67" } ], "title": "platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:37:44.050Z" } } ] } }