{"id":"AZL-74396","summary":"CVE-2025-68769 affecting package kernel for versions less than 6.6.121.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix return value of f2fs_recover_fsync_data()\n\nWith below scripts, it will trigger panic in f2fs:\n\nmkfs.f2fs -f /dev/vdd\nmount /dev/vdd /mnt/f2fs\ntouch /mnt/f2fs/foo\nsync\necho 111 \u003e\u003e /mnt/f2fs/foo\nf2fs_io fsync /mnt/f2fs/foo\nf2fs_io shutdown 2 /mnt/f2fs\numount /mnt/f2fs\nmount -o ro,norecovery /dev/vdd /mnt/f2fs\nor\nmount -o ro,disable_roll_forward /dev/vdd /mnt/f2fs\n\nF2FS-fs (vdd): f2fs_recover_fsync_data: recovery fsync data, check_only: 0\nF2FS-fs (vdd): Mounted with checkpoint version = 7f5c361f\nF2FS-fs (vdd): Stopped filesystem due to reason: 0\nF2FS-fs (vdd): f2fs_recover_fsync_data: recovery fsync data, check_only: 1\nFilesystem f2fs get_tree() didn't set fc-\u003eroot, returned 1\n------------[ cut here ]------------\nkernel BUG at fs/super.c:1761!\nOops: invalid opcode: 0000 [#1] SMP PTI\nCPU: 3 UID: 0 PID: 722 Comm: mount Not tainted 6.18.0-rc2+ #721 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nRIP: 0010:vfs_get_tree.cold+0x18/0x1a\nCall Trace:\n \u003cTASK\u003e\n fc_mount+0x13/0xa0\n path_mount+0x34e/0xc50\n __x64_sys_mount+0x121/0x150\n do_syscall_64+0x84/0x800\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\nRIP: 0033:0x7fa6cc126cfe\n\nThe root cause is we missed to handle error number returned from\nf2fs_recover_fsync_data() when mounting image w/ ro,norecovery or\nro,disable_roll_forward mount option, result in returning a positive\nerror number to vfs_get_tree(), fix it.","modified":"2026-04-01T05:22:43.095042Z","published":"2026-01-13T16:15:56Z","upstream":["CVE-2025-68769"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68769"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.121.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-74396.json"}}],"schema_version":"1.7.5"}