{"cve":"CVE-2023-53763","nvd":{"published":"2025-12-08T02:15:52.173","modified":"2026-08-04T10:19:20.440","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"f2fs: fix to do sanity check on extent cache correctly\"\n\nsyzbot reports a f2fs bug as below:\n\nUBSAN: array-index-out-of-bounds in fs/f2fs/f2fs.h:3275:19\nindex 1409 is out of range for type '__le32[923]' (aka 'unsigned int[923]')\nCall Trace:\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:217 [inline]\n __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348\n inline_data_addr fs/f2fs/f2fs.h:3275 [inline]\n __recover_inline_status fs/f2fs/inode.c:113 [inline]\n do_read_inode fs/f2fs/inode.c:480 [inline]\n f2fs_iget+0x4730/0x48b0 fs/f2fs/inode.c:604\n f2fs_fill_super+0x640e/0x80c0 fs/f2fs/super.c:4601\n mount_bdev+0x276/0x3b0 fs/super.c:1391\n legacy_get_tree+0xef/0x190 fs/fs_context.c:611\n vfs_get_tree+0x8c/0x270 fs/super.c:1519\n do_new_mount+0x28f/0xae0 fs/namespace.c:3335\n do_mount fs/namespace.c:3675 [inline]\n __do_sys_mount fs/namespace.c:3884 [inline]\n __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe issue was bisected to:\n\ncommit d48a7b3a72f121655d95b5157c32c7d555e44c05\nAuthor: Chao Yu <chao@kernel.org>\nDate:   Mon Jan 9 03:49:20 2023 +0000\n\n    f2fs: fix to do sanity check on extent cache correctly\n\nThe root cause is we applied both v1 and v2 of the patch, v2 is the right\nfix, so it needs to revert v1 in order to fix reported issue.\n\nv1:\ncommit d48a7b3a72f1 (\"f2fs: fix to do sanity check on extent cache correctly\")\nhttps://lore.kernel.org/lkml/20230109034920.492914-1-chao@kernel.org/\n\nv2:\ncommit 269d11948100 (\"f2fs: fix to do sanity check on extent cache correctly\")\nhttps://lore.kernel.org/lkml/20230207134808.1827869-1-chao@kernel.org/","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/0d545a8e77cbd1fbad311b18952e38e0f7672ab4","https://git.kernel.org/stable/c/958ccbbf1ce716d77c7cfa79ace50a421c1eed73","https://git.kernel.org/stable/c/bbb3cd66301ef752fae2922452660f228d69bcaf","https://git.kernel.org/stable/c/ea35767edc78327c686e21fe1231b668f11be0db"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2023-53763","score":0.00142,"percentile":0.03536,"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."]}