{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T01:07:37.098","vulnerabilities":[{"cve":{"id":"CVE-2024-26899","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-04-17T11:15:10.870","lastModified":"2024-11-21T09:03:20.160","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix deadlock between bd_link_disk_holder and partition scan\n\n'open_mutex' of gendisk is used to protect open/close block devices. But\nin bd_link_disk_holder(), it is used to protect the creation of symlink\nbetween holding disk and slave bdev, which introduces some issues.\n\nWhen bd_link_disk_holder() is called, the driver is usually in the process\nof initialization/modification and may suspend submitting io. At this\ntime, any io hold 'open_mutex', such as scanning partitions, can cause\ndeadlocks. For example, in raid:\n\nT1                              T2\nbdev_open_by_dev\n lock open_mutex [1]\n ...\n  efi_partition\n  ...\n   md_submit_bio\n\t\t\t\tmd_ioctl mddev_syspend\n\t\t\t\t  -> suspend all io\n\t\t\t\t md_add_new_disk\n\t\t\t\t  bind_rdev_to_array\n\t\t\t\t   bd_link_disk_holder\n\t\t\t\t    try lock open_mutex [2]\n    md_handle_request\n     -> wait mddev_resume\n\nT1 scan partition, T2 add a new device to raid. T1 waits for T2 to resume\nmddev, but T2 waits for open_mutex held by T1. Deadlock occurs.\n\nFix it by introducing a local mutex 'blk_holder_mutex' to replace\n'open_mutex'."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bloque: soluciona el punto muerto entre bd_link_disk_holder y el análisis de partición. 'open_mutex' de gendisk se utiliza para proteger dispositivos de bloqueo de apertura/cierre. Pero en bd_link_disk_holder(), se utiliza para proteger la creación de un enlace simbólico entre el disco de retención y el bdev esclavo, lo que introduce algunos problemas. Cuando se llama a bd_link_disk_holder(), el controlador generalmente está en el proceso de inicialización/modificación y puede suspender el envío de io. En este momento, cualquier retención de io 'open_mutex', como escanear particiones, puede causar interbloqueos. Por ejemplo, en raid: T1 T2 bdev_open_by_dev lock open_mutex [1] ... efi_partition ... md_submit_bio md_ioctl mddev_syspend -> suspender todo io md_add_new_disk bind_rdev_to_array bd_link_disk_holder try lock open_mutex [2] md_handle_request -> esperar mddev_resume T1 escanear partición, agregar un Nuevo dispositivo para atacar. T1 espera a que T2 reanude mddev, pero T2 espera a open_mutex retenido por T1. Se produce un punto muerto. Solucionarlo introduciendo un mutex local 'blk_holder_mutex' para reemplazar 'open_mutex'."}],"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-667"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.7.11","matchCriteriaId":"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.8.2","matchCriteriaId":"543A75FF-25B8-4046-A514-1EA8EDD87AB1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/1e5c5b0abaee7b62a10b9707a62083b71ad21f62","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/5a87c1f7993bc8ac358a3766bac5dc7126e01e98","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/1e5c5b0abaee7b62a10b9707a62083b71ad21f62","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/5a87c1f7993bc8ac358a3766bac5dc7126e01e98","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}