{"id":"CVE-2026-31714","summary":"f2fs: fix to avoid memory leak in f2fs_rename()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid memory leak in f2fs_rename()\n\nsyzbot reported a f2fs bug as below:\n\nBUG: memory leak\nunreferenced object 0xffff888127f70830 (size 16):\n  comm \"syz.0.23\", pid 6144, jiffies 4294943712\n  hex dump (first 16 bytes):\n    3c af 57 72 5b e6 8f ad 6e 8e fd 33 42 39 03 ff  \u003c.Wr[...n..3B9..\n  backtrace (crc 925f8a80):\n    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n    slab_post_alloc_hook mm/slub.c:4520 [inline]\n    slab_alloc_node mm/slub.c:4844 [inline]\n    __do_kmalloc_node mm/slub.c:5237 [inline]\n    __kmalloc_noprof+0x3bd/0x560 mm/slub.c:5250\n    kmalloc_noprof include/linux/slab.h:954 [inline]\n    fscrypt_setup_filename+0x15e/0x3b0 fs/crypto/fname.c:364\n    f2fs_setup_filename+0x52/0xb0 fs/f2fs/dir.c:143\n    f2fs_rename+0x159/0xca0 fs/f2fs/namei.c:961\n    f2fs_rename2+0xd5/0xf20 fs/f2fs/namei.c:1308\n    vfs_rename+0x7ff/0x1250 fs/namei.c:6026\n    filename_renameat2+0x4f4/0x660 fs/namei.c:6144\n    __do_sys_renameat2 fs/namei.c:6173 [inline]\n    __se_sys_renameat2 fs/namei.c:6168 [inline]\n    __x64_sys_renameat2+0x59/0x80 fs/namei.c:6168\n    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n    do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94\n    entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe root cause is in commit 40b2d55e0452 (\"f2fs: fix to create selinux\nlabel during whiteout initialization\"), we added a call to\nf2fs_setup_filename() without a matching call to f2fs_free_filename(),\nfix it.","modified":"2026-10-28T02:30:56.959093513Z","published":"2026-05-01T13:56:09.925Z","related":["openSUSE-SU-2026:10793-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31714.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/047c0aef6af37a2a35181aa085c616ad286386f1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/369eb2016d8e2f01931b3bad1cb9cefa83f44003"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3cf11e6f36c170050c12171dd6fd3142711478fc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a76c1cad4e80a9802ef8048662255417e3ce5b79"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c78206dcb912ab60b8ee3cbe8c48d749a9a12e1e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31714.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31714"},{"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":"7525dec4b34c80b3015c3f2ac143fd2bfc1febc3"},{"fixed":"a76c1cad4e80a9802ef8048662255417e3ce5b79"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"40b2d55e045222dd6de2a54a299f682e0f954b03"},{"fixed":"c78206dcb912ab60b8ee3cbe8c48d749a9a12e1e"},{"fixed":"047c0aef6af37a2a35181aa085c616ad286386f1"},{"fixed":"369eb2016d8e2f01931b3bad1cb9cefa83f44003"},{"fixed":"3cf11e6f36c170050c12171dd6fd3142711478fc"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.6.23"},{"fixed":"6.6.136"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.7.11"},{"fixed":"6.8"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.8.2"},{"fixed":"6.9"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1d1b89c9846e6a550eca3d2ce9323fb591e4f321"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"64582cc5357cd984724cfb0835b4a34d9c279d31"}]}],"versions":["v6.6.135","v6.6.134","v6.6.133","v6.6.132","v6.6.131","v6.6.130","v6.6.129","v6.6.128","v6.6.127","v6.6.126","v6.6.125","v6.6.124","v6.6.123","v6.6.122","v6.6.121","v6.6.120","v6.6.119","v6.6.118","v6.6.117","v6.6.116","v6.6.115","v6.6.114","v6.6.113","v6.6.112","v6.6.111","v6.6.110","v6.6.109","v6.6.108","v6.6.107","v6.6.106","v6.6.105","v6.6.104","v6.6.103","v6.6.102","v6.6.101","v6.6.100","v6.6.99","v6.6.98","v6.6.97","v6.6.96","v6.6.95","v6.6.94","v6.6.93","v6.6.92","v6.6.91","v6.6.90","v6.6.89","v6.6.88","v6.6.87","v6.6.86","v6.6.85","v6.6.84","v6.6.83","v6.6.82","v6.6.81","v6.6.80","v6.6.79","v6.6.78","v6.6.77","v6.6.76","v6.6.75","v6.6.74","v6.6.73","v6.6.72","v6.6.71","v6.6.70","v6.6.69","v6.6.68","v6.6.67","v6.6.66","v6.6.65","v6.6.64","v6.6.63","v6.6.62","v6.6.61","v6.6.60","v6.6.59","v6.6.58","v6.6.57","v6.6.56","v6.6.55","v6.6.54","v6.6.53","v6.6.52","v6.6.51","v6.6.50","v6.6.49","v6.6.48","v6.6.47","v6.6.46","v6.6.45","v6.6.44","v6.6.43","v6.6.42","v6.6.41","v6.6.40","v6.6.39","v6.6.38","v6.6.37","v6.6.36","v6.6.35","v6.6.34","v6.6.33","v6.6.32","v6.6.31","v6.6.30","v6.6.29","v6.6.28","v6.6.27","v6.6.26","v6.6.25","v6.6.24","v6.6.23","v6.7.12","v6.7.11","v6.8.12","v6.8.11","v6.8.10","v6.8.9","v6.8.8","v6.8.7","v6.8.6","v6.8.5","v6.8.4","v6.8.3","v6.8.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31714.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.136"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.84"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.9.0"},{"fixed":"6.18.25"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"7.0.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31714.json"}}],"schema_version":"1.9.2"}