{"id":"CVE-2025-38549","summary":"efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths\n\nWhen processing mount options, efivarfs allocates efivarfs_fs_info (sfi)\nearly in fs_context initialization. However, sfi is associated with the\nsuperblock and typically freed when the superblock is destroyed. If the\nfs_context is released (final put) before fill_super is called—such as\non error paths or during reconfiguration—the sfi structure would leak,\nas ownership never transfers to the superblock.\n\nImplement the .free callback in efivarfs_context_ops to ensure any\nallocated sfi is properly freed if the fs_context is torn down before\nfill_super, preventing this memory leak.","modified":"2026-04-02T12:48:01.474490Z","published":"2025-08-16T11:34:17.699Z","related":["SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","openSUSE-SU-2025:20081-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38549.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/64e135f1eaba0bbb0cdee859af3328c68d5b9789"},{"type":"WEB","url":"https://git.kernel.org/stable/c/816d36973467d1c9c08a48bdffe4675e219a2e84"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e9fabe7036bb8be6071f39dc38605508f5f57b20"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38549.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38549"},{"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":"5329aa5101f73c451bcd48deaf3f296685849d9c"},{"fixed":"816d36973467d1c9c08a48bdffe4675e219a2e84"},{"fixed":"e9fabe7036bb8be6071f39dc38605508f5f57b20"},{"fixed":"64e135f1eaba0bbb0cdee859af3328c68d5b9789"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38549.json"}}],"schema_version":"1.7.5"}