{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-22T19:37:46.092","vulnerabilities":[{"cve":{"id":"CVE-2024-53131","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-12-04T15:15:13.090","lastModified":"2025-11-03T23:17:22.657","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix null-ptr-deref in block_touch_buffer tracepoint\n\nPatch series \"nilfs2: fix null-ptr-deref bugs on block tracepoints\".\n\nThis series fixes null pointer dereference bugs that occur when using\nnilfs2 and two block-related tracepoints.\n\n\nThis patch (of 2):\n\nIt has been reported that when using \"block:block_touch_buffer\"\ntracepoint, touch_buffer() called from __nilfs_get_folio_block() causes a\nNULL pointer dereference, or a general protection fault when KASAN is\nenabled.\n\nThis happens because since the tracepoint was added in touch_buffer(), it\nreferences the dev_t member bh->b_bdev->bd_dev regardless of whether the\nbuffer head has a pointer to a block_device structure.  In the current\nimplementation, the block_device structure is set after the function\nreturns to the caller.\n\nHere, touch_buffer() is used to mark the folio/page that owns the buffer\nhead as accessed, but the common search helper for folio/page used by the\ncaller function was optimized to mark the folio/page as accessed when it\nwas reimplemented a long time ago, eliminating the need to call\ntouch_buffer() here in the first place.\n\nSo this solves the issue by eliminating the touch_buffer() call itself."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint Serie de parches \"nilfs2: fix null-ptr-deref bugs on block tracepoints\". Esta serie corrige errores de desreferencia de puntero nulo que ocurren al usar nilfs2 y dos puntos de seguimiento relacionados con bloques. Este parche (de 2): Se ha informado que al usar el punto de seguimiento \"block:block_touch_buffer\", touch_buffer() llamado desde __nilfs_get_folio_block() causa una desreferencia de puntero NULL o un error de protección general cuando KASAN está habilitado. Esto sucede porque, dado que el punto de seguimiento se agregó en touch_buffer(), hace referencia al miembro dev_t bh->b_bdev->bd_dev independientemente de si el cabezal del búfer tiene un puntero a una estructura block_device. En la implementación actual, la estructura block_device se establece después de que la función regresa al llamador. Aquí, touch_buffer() se utiliza para marcar el folio/página que posee el encabezado del búfer como accedido, pero el asistente de búsqueda común para folio/página utilizado por la función de llamada se optimizó para marcar el folio/página como accedido cuando se reimplementó hace mucho tiempo, eliminando la necesidad de llamar a touch_buffer() aquí en primer lugar. Por lo tanto, esto resuelve el problema al eliminar la llamada a touch_buffer() en sí."}],"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:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1.119","matchCriteriaId":"B9F07E74-2989-4705-AED1-FEACA2FEF716"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.0","versionEndExcluding":"6.6.63","matchCriteriaId":"DC8AE946-6593-4D8D-863A-0BC137CF667F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11.0","versionEndExcluding":"6.11.10","matchCriteriaId":"5D7D3F96-FD78-48BB-9935-3CD41775FEAA"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/085556bf8c70e2629e02e79268dac3016a08b8bf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/19c71cdd77973f99a9adc3190130bc3aa7ae5423","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3b2a4fd9bbee77afdd3ed5a05a0c02b6cde8d3b9","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/59b49ca67cca7b007a5afd3de0283c8008157665","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6438f3f42cda825f6f59b4e45ac3a1da28a6f2c9","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/77e47f89d32c2d72eb33d0becbce7abe14d061f4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b017697a517f8779ada4e8ce1c2c75dbf60a2636","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cd45e963e44b0f10d90b9e6c0e8b4f47f3c92471","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}