CVE-2024-26630

{"id": "CVE-2024-26630", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "published": "2024-03-13T16:15:30.047", "references": [{"url": "https://git.kernel.org/stable/c/3a75cb05d53f4a6823a32deb078de1366954a804", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ba60fdf75e89ea762bb617be578dc47f27655117", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fe7e008e0ce728252e4ec652cceebcc62211657c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3a75cb05d53f4a6823a32deb078de1366954a804", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/ba60fdf75e89ea762bb617be578dc47f27655117", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/fe7e008e0ce728252e4ec652cceebcc62211657c", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: cachestat: fix folio read-after-free in cache walk\n\nIn cachestat, we access the folio from the page cache's xarray to compute\nits page offset, and check for its dirty and writeback flags. However, we\ndo not hold a reference to the folio before performing these actions,\nwhich means the folio can concurrently be released and reused as another\nfolio/page/slab.\n\nGet around this altogether by just using xarray's existing machinery for\nthe folio page offsets and dirty/writeback states.\n\nThis changes behavior for tmpfs files to now always report zeroes in their\ndirty and writeback counters. This is okay as tmpfs doesn't follow\nconventional writeback cache behavior: its pages get \"cleaned\" during\nswapout, after which they're no longer resident etc."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: cachestat: corrige read-after-free la publicaci\u00f3n en cache walk En cachestat, accedemos a la publicaci\u00f3n desde la matriz x de la cach\u00e9 de la p\u00e1gina para calcular su desplazamiento de p\u00e1gina y comprobar si est\u00e1 sucia y banderas de reescritura. Sin embargo, no mantenemos una referencia al folio antes de realizar estas acciones, lo que significa que el folio se puede liberar y reutilizar simult\u00e1neamente como otro folio/p\u00e1gina/losa. Evite esto por completo simplemente utilizando la maquinaria existente de xarray para los desplazamientos de p\u00e1ginas de folio y los estados sucios/de reescritura. Esto cambia el comportamiento de los archivos tmpfs para que ahora siempre informen ceros en sus contadores sucios y de reescritura. Esto est\u00e1 bien ya que tmpfs no sigue el comportamiento de cach\u00e9 de reescritura convencional: sus p\u00e1ginas se \"limpian\" durante el intercambio, despu\u00e9s del cual ya no residen, etc."}], "lastModified": "2025-03-13T19:36:45.610", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC0DAF43-2BA8-4BDC-84DA-C9482F59F45B", "versionEndExcluding": "6.6.21", "versionStartIncluding": "6.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C538467-EDA0-4A9A-82EB-2925DE9FF827", "versionEndExcluding": "6.7.9", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B9F4EA73-0894-400F-A490-3A397AB7A517"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "056BD938-0A27-4569-B391-30578B309EE3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F02056A5-B362-4370-9FF8-6F0BD384D520"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62075ACE-B2A0-4B16-829D-B3DA5AE5CC41"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A780F817-2A77-4130-A9B7-5C25606314E3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AEB9199B-AB8F-4877-8964-E2BA95B5F15C"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}