{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-50202", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.969Z", "datePublished": "2024-11-08T05:56:16.544Z", "dateUpdated": "2024-12-19T09:35:21.388Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T09:35:21.388Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: propagate directory read errors from nilfs_find_entry()\n\nSyzbot reported that a task hang occurs in vcs_open() during a fuzzing\ntest for nilfs2.\n\nThe root cause of this problem is that in nilfs_find_entry(), which\nsearches for directory entries, ignores errors when loading a directory\npage/folio via nilfs_get_folio() fails.\n\nIf the filesystem images is corrupted, and the i_size of the directory\ninode is large, and the directory page/folio is successfully read but\nfails the sanity check, for example when it is zero-filled,\nnilfs_check_folio() may continue to spit out error messages in bursts.\n\nFix this issue by propagating the error to the callers when loading a\npage/folio fails in nilfs_find_entry().\n\nThe current interface of nilfs_find_entry() and its callers is outdated\nand cannot propagate error codes such as -EIO and -ENOMEM returned via\nnilfs_find_entry(), so fix it together."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nilfs2/dir.c", "fs/nilfs2/namei.c", "fs/nilfs2/nilfs.h"], "versions": [{"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "bb857ae1efd3138c653239ed1e7aef14e1242c81", "status": "affected", "versionType": "git"}, {"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "b4b3dc9e7e604be98a222e9f941f5e93798ca475", "status": "affected", "versionType": "git"}, {"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "c1d0476885d708a932980b0f28cd90d9bd71db39", "status": "affected", "versionType": "git"}, {"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "edf8146057264191d5bfe5b91773f13d936dadd3", "status": "affected", "versionType": "git"}, {"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "270a6f9df35fa2aea01ec23770dc9b3fc9a12989", "status": "affected", "versionType": "git"}, {"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "9698088ac7704e260f492d9c254e29ed7dd8729a", "status": "affected", "versionType": "git"}, {"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "efa810b15a25531cbc2f527330947b9fe16916e7", "status": "affected", "versionType": "git"}, {"version": "2ba466d74ed74f073257f86e61519cb8f8f46184", "lessThan": "08cfa12adf888db98879dbd735bc741360a34168", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nilfs2/dir.c", "fs/nilfs2/namei.c", "fs/nilfs2/nilfs.h"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.323", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.285", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.228", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.169", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.114", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.58", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.5", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/bb857ae1efd3138c653239ed1e7aef14e1242c81"}, {"url": "https://git.kernel.org/stable/c/b4b3dc9e7e604be98a222e9f941f5e93798ca475"}, {"url": "https://git.kernel.org/stable/c/c1d0476885d708a932980b0f28cd90d9bd71db39"}, {"url": "https://git.kernel.org/stable/c/edf8146057264191d5bfe5b91773f13d936dadd3"}, {"url": "https://git.kernel.org/stable/c/270a6f9df35fa2aea01ec23770dc9b3fc9a12989"}, {"url": "https://git.kernel.org/stable/c/9698088ac7704e260f492d9c254e29ed7dd8729a"}, {"url": "https://git.kernel.org/stable/c/efa810b15a25531cbc2f527330947b9fe16916e7"}, {"url": "https://git.kernel.org/stable/c/08cfa12adf888db98879dbd735bc741360a34168"}], "title": "nilfs2: propagate directory read errors from nilfs_find_entry()", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

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La causa ra\u00edz de este problema es que en nilfs_find_entry(), que busca entradas de directorio, ignora los errores cuando falla la carga de una p\u00e1gina/folio de directorio a trav\u00e9s de nilfs_get_folio(). Si las im\u00e1genes del sistema de archivos est\u00e1n da\u00f1adas, y el i_size del inodo del directorio es grande, y la p\u00e1gina/folio del directorio se lee correctamente pero falla la comprobaci\u00f3n de cordura, por ejemplo, cuando est\u00e1 llena de ceros, nilfs_check_folio() puede seguir arrojando mensajes de error en r\u00e1fagas. Solucione este problema propagando el error a los llamadores cuando falla la carga de una p\u00e1gina/folio en nilfs_find_entry(). La interfaz actual de nilfs_find_entry() y sus llamadores est\u00e1 desactualizada y no puede propagar c\u00f3digos de error como -EIO y -ENOMEM devueltos a trav\u00e9s de nilfs_find_entry(), as\u00ed que arr\u00e9glenlo juntos."}], "id": "CVE-2024-50202", "lastModified": "2024-11-19T16:12:17.660", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2024-11-08T06:15:16.723", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/08cfa12adf888db98879dbd735bc741360a34168"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/270a6f9df35fa2aea01ec23770dc9b3fc9a12989"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9698088ac7704e260f492d9c254e29ed7dd8729a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b4b3dc9e7e604be98a222e9f941f5e93798ca475"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bb857ae1efd3138c653239ed1e7aef14e1242c81"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c1d0476885d708a932980b0f28cd90d9bd71db39"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/edf8146057264191d5bfe5b91773f13d936dadd3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/efa810b15a25531cbc2f527330947b9fe16916e7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-755"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nilfs2: propagate directory read errors from nilfs_find_entry()", "id": "2324602", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2324602"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-755", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnilfs2: propagate directory read errors from nilfs_find_entry()\nSyzbot reported that a task hang occurs in vcs_open() during a fuzzing\ntest for nilfs2.\nThe root cause of this problem is that in nilfs_find_entry(), which\nsearches for directory entries, ignores errors when loading a directory\npage/folio via nilfs_get_folio() fails.\nIf the filesystem images is corrupted, and the i_size of the directory\ninode is large, and the directory page/folio is successfully read but\nfails the sanity check, for example when it is zero-filled,\nnilfs_check_folio() may continue to spit out error messages in bursts.\nFix this issue by propagating the error to the callers when loading a\npage/folio fails in nilfs_find_entry().\nThe current interface of nilfs_find_entry() and its callers is outdated\nand cannot propagate error codes such as -EIO and -ENOMEM returned via\nnilfs_find_entry(), so fix it together."], "name": "CVE-2024-50202", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-11-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50202\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50202\nhttps://lore.kernel.org/linux-cve-announce/2024110821-CVE-2024-50202-d5c5@gregkh/T"], "threat_severity": "Moderate"}