{"id":"CVE-2026-31714","state":"PUBLISHED","title":"f2fs: fix to avoid memory leak in f2fs_rename()","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.","publishedAt":"2026-05-01T13:56:09.925Z","updatedAt":"2026-06-14T17:44:19.741Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7525dec4b34c80b3015c3f2ac143fd2bfc1febc3","status":"affected","lessThan":"a76c1cad4e80a9802ef8048662255417e3ce5b79","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"c78206dcb912ab60b8ee3cbe8c48d749a9a12e1e","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"047c0aef6af37a2a35181aa085c616ad286386f1","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"369eb2016d8e2f01931b3bad1cb9cefa83f44003","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"3cf11e6f36c170050c12171dd6fd3142711478fc","versionType":"git"},{"version":"1d1b89c9846e6a550eca3d2ce9323fb591e4f321","status":"affected","versionType":"git"},{"version":"64582cc5357cd984724cfb0835b4a34d9c279d31","status":"affected","versionType":"git"},{"version":"6.6.23","status":"affected","lessThan":"6.6.136","versionType":"semver"},{"version":"6.7.11","status":"affected","lessThan":"6.8","versionType":"semver"},{"version":"6.8.2","status":"affected","lessThan":"6.9","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/namei.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.6.136","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.84","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.25","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.2","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/namei.c"]}],"references":["https://git.kernel.org/stable/c/a76c1cad4e80a9802ef8048662255417e3ce5b79","https://git.kernel.org/stable/c/c78206dcb912ab60b8ee3cbe8c48d749a9a12e1e","https://git.kernel.org/stable/c/047c0aef6af37a2a35181aa085c616ad286386f1","https://git.kernel.org/stable/c/369eb2016d8e2f01931b3bad1cb9cefa83f44003","https://git.kernel.org/stable/c/3cf11e6f36c170050c12171dd6fd3142711478fc"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31714.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31714","state":"PUBLISHED","datePublished":"2026-05-01T13:56:09.925Z","dateUpdated":"2026-06-14T17:44:19.741Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.133Z"},"containers":{"cna":{"title":"f2fs: fix to avoid memory leak in f2fs_rename()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7525dec4b34c80b3015c3f2ac143fd2bfc1febc3","status":"affected","lessThan":"a76c1cad4e80a9802ef8048662255417e3ce5b79","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"c78206dcb912ab60b8ee3cbe8c48d749a9a12e1e","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"047c0aef6af37a2a35181aa085c616ad286386f1","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"369eb2016d8e2f01931b3bad1cb9cefa83f44003","versionType":"git"},{"version":"40b2d55e045222dd6de2a54a299f682e0f954b03","status":"affected","lessThan":"3cf11e6f36c170050c12171dd6fd3142711478fc","versionType":"git"},{"version":"1d1b89c9846e6a550eca3d2ce9323fb591e4f321","status":"affected","versionType":"git"},{"version":"64582cc5357cd984724cfb0835b4a34d9c279d31","status":"affected","versionType":"git"},{"version":"6.6.23","status":"affected","lessThan":"6.6.136","versionType":"semver"},{"version":"6.7.11","status":"affected","lessThan":"6.8","versionType":"semver"},{"version":"6.8.2","status":"affected","lessThan":"6.9","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/namei.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.6.136","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.84","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.25","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.2","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/namei.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a76c1cad4e80a9802ef8048662255417e3ce5b79"},{"url":"https://git.kernel.org/stable/c/c78206dcb912ab60b8ee3cbe8c48d749a9a12e1e"},{"url":"https://git.kernel.org/stable/c/047c0aef6af37a2a35181aa085c616ad286386f1"},{"url":"https://git.kernel.org/stable/c/369eb2016d8e2f01931b3bad1cb9cefa83f44003"},{"url":"https://git.kernel.org/stable/c/3cf11e6f36c170050c12171dd6fd3142711478fc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:44:19.741Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.23","versionEndExcluding":"6.6.136"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.84"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.25"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.0.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}