{"id":"CVE-2025-38580","summary":"ext4: fix inode use after free in ext4_end_io_rsv_work()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix inode use after free in ext4_end_io_rsv_work()\n\nIn ext4_io_end_defer_completion(), check if io_end-\u003elist_vec is empty to\navoid adding an io_end that requires no conversion to the\ni_rsv_conversion_list, which in turn prevents starting an unnecessary\nworker. An ext4_emergency_state() check is also added to avoid attempting\nto abort the journal in an emergency state.\n\nAdditionally, ext4_put_io_end_defer() is refactored to call\next4_io_end_defer_completion() directly instead of being open-coded.\nThis also prevents starting an unnecessary worker when EXT4_IO_END_FAILED\nis set but data_err=abort is not enabled.\n\nThis ensures that the check in ext4_put_io_end_defer() is consistent with\nthe check in ext4_end_bio(). Otherwise, we might add an io_end to the\ni_rsv_conversion_list and then call ext4_finish_bio(), after which the\ninode could be freed before ext4_end_io_rsv_work() is called, triggering\na use-after-free issue.","modified":"2026-08-12T03:51:10.026630795Z","published":"2025-08-19T17:03:03.018Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38580.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/469c44e66e2110054949609dde095788320139d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac999862b98a0f49e858e509f776be51406f1e77"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c678bdc998754589cea2e6afab9401d7d8312ac4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38580.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38580"},{"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":"ce51afb8cc5e1867ea0dfdf5e92ddbe31a1fad5d"},{"fixed":"ac999862b98a0f49e858e509f776be51406f1e77"},{"fixed":"469c44e66e2110054949609dde095788320139d0"},{"fixed":"c678bdc998754589cea2e6afab9401d7d8312ac4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38580.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.15.10"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.16.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38580.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}