{"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"}}]}}