{"id":"CVE-2025-39888","summary":"fuse: Block access to folio overlimit","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: Block access to folio overlimit\n\nsyz reported a slab-out-of-bounds Write in fuse_dev_do_write.\n\nWhen the number of bytes to be retrieved is truncated to the upper limit\nby fc-\u003emax_pages and there is an offset, the oob is triggered.\n\nAdd a loop termination condition to prevent overruns.","modified":"2026-04-02T12:48:12.207002Z","published":"2025-09-23T06:00:54.156Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39888.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/623719227b114d73a2cee45f1b343ced63ce09ec"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9d81ba6d49a7457784f0b6a71046818b86ec7e44"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39888.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39888"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3568a956932621cafadafc8b75fcf6dc06555105"},{"fixed":"623719227b114d73a2cee45f1b343ced63ce09ec"},{"fixed":"9d81ba6d49a7457784f0b6a71046818b86ec7e44"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39888.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:H/I:H/A:H"}]}