{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-16T13:40:00.443","vulnerabilities":[{"cve":{"id":"CVE-2023-52497","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-03-01T14:15:53.273","lastModified":"2025-01-09T20:20:02.167","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix lz4 inplace decompression\n\nCurrently EROFS can map another compressed buffer for inplace\ndecompression, that was used to handle the cases that some pages of\ncompressed data are actually not in-place I/O.\n\nHowever, like most simple LZ77 algorithms, LZ4 expects the compressed\ndata is arranged at the end of the decompressed buffer and it\nexplicitly uses memmove() to handle overlapping:\n  __________________________________________________________\n |_ direction of decompression --> ____ |_ compressed data _|\n\nAlthough EROFS arranges compressed data like this, it typically maps two\nindividual virtual buffers so the relative order is uncertain.\nPreviously, it was hardly observed since LZ4 only uses memmove() for\nshort overlapped literals and x86/arm64 memmove implementations seem to\ncompletely cover it up and they don't have this issue.  Juhyung reported\nthat EROFS data corruption can be found on a new Intel x86 processor.\nAfter some analysis, it seems that recent x86 processors with the new\nFSRM feature expose this issue with \"rep movsb\".\n\nLet's strictly use the decompressed buffer for lz4 inplace\ndecompression for now.  Later, as an useful improvement, we could try\nto tie up these two buffers together in the correct order."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs: corrige la descompresión in situ de lz4 Actualmente, EROFS puede asignar otro búfer comprimido para la descompresión in situ, que se utilizó para manejar los casos en que algunas páginas de datos comprimidos en realidad no están in situ I/ o. Sin embargo, como la mayoría de los algoritmos LZ77 simples, LZ4 espera que los datos comprimidos estén organizados al final del buffer descomprimido y usa explícitamente memmove() para manejar la superposición: ________________________________________________________ |_ dirección de descompresión --> ____ |_ datos comprimidos _| Aunque EROFS organiza los datos comprimidos de esta manera, normalmente asigna dos buffers virtuales individuales, por lo que el orden relativo es incierto. Anteriormente, apenas se observaba ya que LZ4 solo usa memmove() para literales cortos superpuestos y las implementaciones de memmove x86/arm64 parecen cubrirlo por completo y no tienen este problema. Juhyung informó que se pueden encontrar daños en los datos EROFS en un nuevo procesador Intel x86. Después de algunos análisis, parece que los procesadores x86 recientes con la nueva característica FSRM exponen este problema con \"rep movsb\". Por ahora, usemos estrictamente el búfer descomprimido para la descompresión in situ de lz4. Más adelante, como mejora útil, podríamos intentar unir estos dos buffers en el orden correcto."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":4.2}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.4.285","matchCriteriaId":"6B9DFA1E-13AA-4825-AB77-27381BDF4E28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.211","matchCriteriaId":"7DDA4DCF-671D-415D-94DF-6E3C77DF0704"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.150","matchCriteriaId":"CB6C60DE-9E0C-46C5-904D-D4F4031F8E95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.76","matchCriteriaId":"32F0FEB3-5FE1-4400-A56D-886F09BE872E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.15","matchCriteriaId":"87C718CB-AE3D-4B07-B4D9-BFF64183C468"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.7.3","matchCriteriaId":"58FD5308-148A-40D3-B36A-0CA6B434A8BF"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/33bf23c9940dbd3a22aad7f0cda4c84ed5701847","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3c12466b6b7bf1e56f9b32c366a3d83d87afb4de","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/77cbc04a1a8610e303a0e0d74f2676667876a184","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9ff2d260b25df6fe1341a79113d88fecf6bd553e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a0180e940cf1aefa7d516e20b259ad34f7a8b379","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bffc4cc334c5bb31ded54bc3cfd651735a3cb79e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f36d200a80a3ca025532ed60dd1ac21b620e14ae","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/33bf23c9940dbd3a22aad7f0cda4c84ed5701847","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3c12466b6b7bf1e56f9b32c366a3d83d87afb4de","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/77cbc04a1a8610e303a0e0d74f2676667876a184","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a0180e940cf1aefa7d516e20b259ad34f7a8b379","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bffc4cc334c5bb31ded54bc3cfd651735a3cb79e","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f36d200a80a3ca025532ed60dd1ac21b620e14ae","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}