{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-22012", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.805Z", "datePublished": "2025-04-08T08:18:03.312Z", "dateUpdated": "2026-08-05T11:55:58.248Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:55:58.248Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu\"\n\nThere are reports that the pagetable walker cache coherency is not a\ngiven across the spectrum of SDM845/850 devices, leading to lock-ups\nand resets. It works fine on some devices (like the Dragonboard 845c,\nbut not so much on the Lenovo Yoga C630).\n\nThis unfortunately looks like a fluke in firmware development, where\nlikely somewhere in the vast hypervisor stack, a change to accommodate\nfor this was only introduced after the initial software release (which\noften serves as a baseline for products).\n\nRevert the change to avoid additional guesswork around crashes.\n\nThis reverts commit 6b31a9744b8726c69bb0af290f8475a368a4b805." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is in the local platform description of the SoC's IOMMU, and the stale-pagetable condition is provoked by driving DMA map/unmap churn on locally attached masters (UFS, SD, PCIe, IPA, DSPs) via ordinary syscall-level I/O. There is no remote protocol entry point into the io-pgtable update path.\nAC:L - On an affected SDM845/850 unit the driver omits page-table cache maintenance unconditionally on every single map and unmap, so an attacker needs only to issue I/O to make the walker consume stale entries — no race to win and no uncontrolled precondition. Cache pressure needed to make a specific PTE go stale is itself attacker-influenceable through allocation activity.\nPR:L - Any unprivileged local account can generate the required IOMMU mapping churn through normal file I/O, network traffic, or DSP/crypto offload; no capability, CAP_SYS_ADMIN, or namespace trick is needed. The condition additionally manifests during boot with no authenticated user at all.\nUI:N - The attacker drives DMA activity entirely from its own processes, and the incoherent walker misbehaves as a direct result. No administrator or victim action is required.\nS:C - The SMMU is the authority that confines DMA-capable peripherals to their assigned address space, and translating from stale or garbage page tables lets those peripherals — PCIe endpoints, the SD controller, UFS, IPA, and the cDSP/aDSP firmware — reach physical memory outside their IOMMU domain. This is an IOMMU/DMA containment bypass, and the same flag is what gates VFIO/iommufd device assignment to guests.\nC:H - A master walking stale or uninitialized page-table contents obtains translations to arbitrary physical frames and can read kernel or other-process memory into buffers the attacker can subsequently retrieve. This is an unbounded physical-memory read primitive, not a limited pointer leak.\nI:H - The same broken translations apply to DMA writes: entries the CPU cleared remain live to the walker, so a device keeps writing into pages that were unmapped and reallocated to kernel data or page tables. Directing device DMA at attacker-chosen physical memory is an arbitrary-write primitive leading to privilege escalation.\nA:H - The upstream report is explicit that this causes lock-ups and resets on affected SDM845/850 devices such as the Lenovo Yoga C630, and unresolvable translations raise SMMU global faults that trigger full SoC resets on Qualcomm platforms." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm64/boot/dts/qcom/sdm845.dtsi" ], "versions": [ { "version": "6b31a9744b8726c69bb0af290f8475a368a4b805", "lessThan": "9e6e9fc90258a318d30b417bcccda908bb82ee9d", "status": "affected", "versionType": "git" }, { "version": "6b31a9744b8726c69bb0af290f8475a368a4b805", "lessThan": "f00db31d235946853fb430de8c6aa1295efc8353", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm64/boot/dts/qcom/sdm845.dtsi" ], "versions": [ { "version": "6.13", "status": "affected" }, { "version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver" }, { "version": "6.13.9", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14", "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": "6.13", "versionEndExcluding": "6.13.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.14" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9e6e9fc90258a318d30b417bcccda908bb82ee9d" }, { "url": "https://git.kernel.org/stable/c/f00db31d235946853fb430de8c6aa1295efc8353" } ], "title": "Revert \"arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu\"", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-667", "lang": "en", "description": "CWE-667 Improper Locking" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-10-01T17:06:54.467971Z", "id": "CVE-2025-22012", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T17:06:57.968Z" } } ] } }