{"id":"AZL-54768","summary":"CVE-2024-56712 affecting package kernel 5.15.200.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nudmabuf: fix memory leak on last export_udmabuf() error path\n\nIn export_udmabuf(), if dma_buf_fd() fails because the FD table is full, a\ndma_buf owning the udmabuf has already been created; but the error handling\nin udmabuf_create() will tear down the udmabuf without doing anything about\nthe containing dma_buf.\n\nThis leaves a dma_buf in memory that contains a dangling pointer; though\nthat doesn't seem to lead to anything bad except a memory leak.\n\nFix it by moving the dma_buf_fd() call out of export_udmabuf() so that we\ncan give it different error handling.\n\nNote that the shape of this code changed a lot in commit 5e72b2b41a21\n(\"udmabuf: convert udmabuf driver to use folios\"); but the memory leak\nseems to have existed since the introduction of udmabuf.","modified":"2026-04-01T05:18:23.099279Z","published":"2024-12-29T09:15:06Z","upstream":["CVE-2024-56712"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56712"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.15.200.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-54768.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}