{"cve":"CVE-2026-31714","nvd":{"published":"2026-05-01T14:16:21.493","modified":"2026-06-17T10:34:17.683","status":"Analyzed","description":"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  <.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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/047c0aef6af37a2a35181aa085c616ad286386f1","https://git.kernel.org/stable/c/369eb2016d8e2f01931b3bad1cb9cefa83f44003","https://git.kernel.org/stable/c/3cf11e6f36c170050c12171dd6fd3142711478fc","https://git.kernel.org/stable/c/a76c1cad4e80a9802ef8048662255417e3ce5b79","https://git.kernel.org/stable/c/c78206dcb912ab60b8ee3cbe8c48d749a9a12e1e"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-31714","score":0.00114,"percentile":0.01442,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}