CVE-2025-38690

{"id": "CVE-2025-38690", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "270172f64b114451876c1b68912653e72ab99f38", "lessThan": "89f511c024879c5812cc0c010a6663b5e49950f3", "versionType": "git"}, {"status": "affected", "version": "270172f64b114451876c1b68912653e72ab99f38", "lessThan": "9d7a1cbebbb691891671def57407ba2f8ee914e8", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/xe/xe_migrate.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"status": "unaffected", "version": "0", "lessThan": "6.16", "versionType": "semver"}, {"status": "unaffected", "version": "6.16.2", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/xe/xe_migrate.c"], "defaultStatus": "affected"}]}], "published": "2025-09-04T16:15:37.153", "references": [{"url": "https://git.kernel.org/stable/c/89f511c024879c5812cc0c010a6663b5e49950f3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9d7a1cbebbb691891671def57407ba2f8ee914e8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-617"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/migrate: prevent infinite recursion\n\nIf the buf + offset is not aligned to XE_CAHELINE_BYTES we fallback to\nusing a bounce buffer. However the bounce buffer here is allocated on\nthe stack, and the only alignment requirement here is that it's\nnaturally aligned to u8, and not XE_CACHELINE_BYTES. If the bounce\nbuffer is also misaligned we then recurse back into the function again,\nhowever the new bounce buffer might also not be aligned, and might never\nbe until we eventually blow through the stack, as we keep recursing.\n\nInstead of using the stack use kmalloc, which should respect the\npower-of-two alignment request here. Fixes a kernel panic when\ntriggering this path through eudebug.\n\nv2 (Stuart):\n - Add build bug check for power-of-two restriction\n - s/EINVAL/ENOMEM/\n\n(cherry picked from commit 38b34e928a08ba594c4bbf7118aa3aadacd62fff)"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/xe/migrate: evitar recursi\u00f3n infinita\n\nSi el buf + offset no est\u00e1 alineado a XE_CACHELINE_BYTES, recurrimos a usar un b\u00fafer de rebote. Sin embargo, el b\u00fafer de rebote aqu\u00ed se asigna en la pila, y el \u00fanico requisito de alineaci\u00f3n aqu\u00ed es que est\u00e9 naturalmente alineado a u8, y no a XE_CACHELINE_BYTES. Si el b\u00fafer de rebote tambi\u00e9n est\u00e1 desalineado, entonces volvemos a recursar en la funci\u00f3n, sin embargo, el nuevo b\u00fafer de rebote tambi\u00e9n podr\u00eda no estar alineado, y podr\u00eda nunca estarlo hasta que eventualmente agotemos la pila, a medida que seguimos recursando.\n\nEn lugar de usar la pila, usa kmalloc, lo que deber\u00eda respetar la solicitud de alineaci\u00f3n de potencia de dos aqu\u00ed. Corrige un p\u00e1nico del kernel al activar esta ruta a trav\u00e9s de eudebug.\n\nv2 (Stuart):\n - A\u00f1adir verificaci\u00f3n de error de compilaci\u00f3n para la restricci\u00f3n de potencia de dos\n - s/EINVAL/ENOMEM/\n\n(seleccionado de la confirmaci\u00f3n 38b34e928a08ba594c4bbf7118aa3aadacd62fff)"}], "lastModified": "2026-10-19T21:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BD7C087D-2415-4521-B624-30003352F899", "versionEndExcluding": "6.16.2", "versionStartIncluding": "6.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}