CVE-2026-31514

{"id": "CVE-2026-31514", "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": "ce63cb62d794c98c7631c2296fa845f2a8d0a4a1", "lessThan": "d1ba7d6b3cd1757b108d7b6856c92ae661d6c323", "versionType": "git"}, {"status": "affected", "version": "ce63cb62d794c98c7631c2296fa845f2a8d0a4a1", "lessThan": "5cf3972c8221abdb1b464a14ccf8103d840b9085", "versionType": "git"}, {"status": "affected", "version": "ce63cb62d794c98c7631c2296fa845f2a8d0a4a1", "lessThan": "5a5f23ef5431639db1ac3a0b274aef3a84cc413c", "versionType": "git"}, {"status": "affected", "version": "ce63cb62d794c98c7631c2296fa845f2a8d0a4a1", "lessThan": "eade54040384f54b7fb330e4b0975c5734850b3c", "versionType": "git"}], "programFiles": ["fs/erofs/fileio.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"status": "unaffected", "version": "0", "lessThan": "6.12", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.80", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.21", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.11", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/erofs/fileio.c"], "defaultStatus": "affected"}]}], "published": "2026-04-22T14:16:50.810", "references": [{"url": "https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: set fileio bio failed in short read case\n\nFor file-backed mount, IO requests are handled by vfs_iocb_iter_read().\nHowever, it can be interrupted by SIGKILL, returning the number of\nbytes actually copied. Unused folios in bio are unexpectedly marked\nas uptodate.\n\n vfs_read\n filemap_read\n filemap_get_pages\n filemap_readahead\n erofs_fileio_readahead\n erofs_fileio_rq_submit\n vfs_iocb_iter_read\n filemap_read\n filemap_get_pages <= detect signal\n erofs_fileio_ki_complete <= set all folios uptodate\n\nThis patch addresses this by setting short read bio with an error\ndirectly."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nerofs: establecer que el bio de fileio fall\u00f3 en caso de lectura corta\n\nPara montajes respaldados por archivos, las solicitudes de E/S son manejadas por vfs_iocb_iter_read().\nSin embargo, puede ser interrumpido por SIGKILL, devolviendo el n\u00famero de bytes realmente copiados. Folios no utilizados en el bio son marcados inesperadamente como actualizados.\n\n vfs_read\n filemap_read\n filemap_get_pages\n filemap_readahead\n erofs_fileio_readahead\n erofs_fileio_rq_submit\n vfs_iocb_iter_read\n filemap_read\n filemap_get_pages <= detectar se\u00f1al\n erofs_fileio_ki_complete <= establecer todos los folios como actualizados\n\nEste parche aborda esto al establecer el bio de lectura corta con un error directamente."}], "lastModified": "2026-11-11T23:10:00.263", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E823EB64-1F92-40BB-891C-D94D00EDA086", "versionEndExcluding": "6.12.80", "versionStartIncluding": "6.12.75"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEA57E4E-36B0-40D5-98B9-6A50348C9E74", "versionEndExcluding": "6.18.21", "versionStartIncluding": "6.18.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A67B0458-DAE3-4940-BBB2-1A4D263AF27B", "versionEndExcluding": "6.19.11", "versionStartIncluding": "6.19.4"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}