{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-22001", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.802Z", "datePublished": "2025-04-03T07:19:04.251Z", "dateUpdated": "2026-08-05T11:55:56.125Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:55:56.125Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/qaic: Fix integer overflow in qaic_validate_req()\n\nThese are u64 variables that come from the user via\nqaic_attach_slice_bo_ioctl(). Use check_add_overflow() to ensure that\nthe math doesn't have an integer wrapping bug." } ], "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 bug is reached through DRM_IOCTL_QAIC_ATTACH_SLICE_BO on the /dev/accel/accelN character device, requiring local access to the machine hosting the Qualcomm Cloud AI 100 accelerator. There is no network-facing path to this code.\nAC:L - The attacker directly supplies the wrapping offset/size pair in the ioctl payload and the overflow is deterministic arithmetic with no race, timing, or memory-layout precondition. A single ioctl pair (attach slice, then execute BO) reliably programs the oversized DMA descriptor.\nPR:L - No capability check exists anywhere in drivers/accel/qaic/, and the ioctl is registered with flags 0 so drm_ioctl_permit() applies no root or auth gate; only an open fd on the accel node is needed. On the multi-tenant inference hosts this accelerator targets, that node is granted to ordinary unprivileged workload users.\nUI:N - The attacker performs the entire sequence itself with two ioctls on a device it opened. No victim action or cooperation is involved.\nS:U - The corruption occurs in host kernel memory under the same kernel security authority; this is a standard local kernel privilege-escalation primitive rather than a VM or IOMMU-boundary escape.\nC:H - A DMA_TO_DEVICE slice with the wrapped length makes the device read up to ~4 GiB of host memory past the buffer and copy it into accelerator memory, which the same unprivileged user can read back, yielding large-scale disclosure of kernel and other tenants' data.\nI:H - A DMA_FROM_DEVICE slice makes the device write ~4 GiB of attacker-controlled data beyond the 8 KiB buffer, giving a wide out-of-bounds write over kernel memory that is readily leveraged into control-flow hijack and privilege escalation.\nA:H - The multi-gigabyte overrun corrupts arbitrary kernel structures and page tables, reliably producing an oops or panic; with an IOMMU present it instead raises DMA faults that wedge or force a reset of the accelerator." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/accel/qaic/qaic_data.c" ], "versions": [ { "version": "ff13be8303336ead5621712f2c55012d738878b5", "lessThan": "4b2a170c25862ad116bd31be6b9841646b4862e8", "status": "affected", "versionType": "git" }, { "version": "ff13be8303336ead5621712f2c55012d738878b5", "lessThan": "b362fc904d264a88b4af20baae9e82491c285e9c", "status": "affected", "versionType": "git" }, { "version": "ff13be8303336ead5621712f2c55012d738878b5", "lessThan": "57fae0c505f49bb1e3d5660cd2cc49697ed85f7c", "status": "affected", "versionType": "git" }, { "version": "ff13be8303336ead5621712f2c55012d738878b5", "lessThan": "67d15c7aa0864dfd82325c7e7e7d8548b5224c7b", "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/accel/qaic/qaic_data.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.85", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.21", "lessThanOrEqual": "6.12.*", "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": "6.4", "versionEndExcluding": "6.6.85" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.21" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.13.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.14" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4b2a170c25862ad116bd31be6b9841646b4862e8" }, { "url": "https://git.kernel.org/stable/c/b362fc904d264a88b4af20baae9e82491c285e9c" }, { "url": "https://git.kernel.org/stable/c/57fae0c505f49bb1e3d5660cd2cc49697ed85f7c" }, { "url": "https://git.kernel.org/stable/c/67d15c7aa0864dfd82325c7e7e7d8548b5224c7b" } ], "title": "accel/qaic: Fix integer overflow in qaic_validate_req()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-190", "lang": "en", "description": "CWE-190 Integer Overflow or Wraparound" } ] } ], "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": "2025-10-01T17:10:27.696134Z", "id": "CVE-2025-22001", "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": "2025-10-01T17:10:29.970Z" } } ] } }