{"cve":"CVE-2023-53616","nvd":{"published":"2025-10-04T16:15:58.460","modified":"2026-08-04T10:19:14.780","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount\n\nsyzbot found an invalid-free in diUnmount:\n\nBUG: KASAN: double-free in slab_free mm/slub.c:3661 [inline]\nBUG: KASAN: double-free in __kmem_cache_free+0x71/0x110 mm/slub.c:3674\nFree of addr ffff88806f410000 by task syz-executor131/3632\n\n CPU: 0 PID: 3632 Comm: syz-executor131 Not tainted 6.1.0-rc7-syzkaller-00012-gca57f02295f1 #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022\n Call Trace:\n  <TASK>\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n  print_address_description+0x74/0x340 mm/kasan/report.c:284\n  print_report+0x107/0x1f0 mm/kasan/report.c:395\n  kasan_report_invalid_free+0xac/0xd0 mm/kasan/report.c:460\n  ____kasan_slab_free+0xfb/0x120\n  kasan_slab_free include/linux/kasan.h:177 [inline]\n  slab_free_hook mm/slub.c:1724 [inline]\n  slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1750\n  slab_free mm/slub.c:3661 [inline]\n  __kmem_cache_free+0x71/0x110 mm/slub.c:3674\n  diUnmount+0xef/0x100 fs/jfs/jfs_imap.c:195\n  jfs_umount+0x108/0x370 fs/jfs/jfs_umount.c:63\n  jfs_put_super+0x86/0x190 fs/jfs/super.c:194\n  generic_shutdown_super+0x130/0x310 fs/super.c:492\n  kill_block_super+0x79/0xd0 fs/super.c:1428\n  deactivate_locked_super+0xa7/0xf0 fs/super.c:332\n  cleanup_mnt+0x494/0x520 fs/namespace.c:1186\n  task_work_run+0x243/0x300 kernel/task_work.c:179\n  exit_task_work include/linux/task_work.h:38 [inline]\n  do_exit+0x664/0x2070 kernel/exit.c:820\n  do_group_exit+0x1fd/0x2b0 kernel/exit.c:950\n  __do_sys_exit_group kernel/exit.c:961 [inline]\n  __se_sys_exit_group kernel/exit.c:959 [inline]\n  __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:959\n  do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n  do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[...]\n\nJFS_IP(ipimap)->i_imap is not setting to NULL after free in diUnmount.\nIf jfs_remount() free JFS_IP(ipimap)->i_imap but then failed at diMount().\nJFS_IP(ipimap)->i_imap will be freed once again.\nFix this problem by setting JFS_IP(ipimap)->i_imap to NULL after free.","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":["CWE-415"],"references":["https://git.kernel.org/stable/c/114ea3cb13ab25f7178cb60283adb93d2f96dad7","https://git.kernel.org/stable/c/4de3a603010e0ca334487de24c6aab0777b7f808","https://git.kernel.org/stable/c/5873df0195124be2f357de11bfd473ead4f90ed8","https://git.kernel.org/stable/c/6e2bda2c192d0244b5a78b787ef20aa10cb319b7","https://git.kernel.org/stable/c/756747d4b439e3e1159282ae89f17eefebbe9b25"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2023-53616","score":0.00157,"percentile":0.04794,"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."]}