{"cve":"CVE-2023-53564","nvd":{"published":"2025-10-04T16:15:51.870","modified":"2026-06-17T06:45:36.937","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix defrag path triggering jbd2 ASSERT\n\ncode path:\n\nocfs2_ioctl_move_extents\n ocfs2_move_extents\n  ocfs2_defrag_extent\n   __ocfs2_move_extent\n    + ocfs2_journal_access_di\n    + ocfs2_split_extent  //sub-paths call jbd2_journal_restart\n    + ocfs2_journal_dirty //crash by jbs2 ASSERT\n\ncrash stacks:\n\nPID: 11297  TASK: ffff974a676dcd00  CPU: 67  COMMAND: \"defragfs.ocfs2\"\n #0 [ffffb25d8dad3900] machine_kexec at ffffffff8386fe01\n #1 [ffffb25d8dad3958] __crash_kexec at ffffffff8395959d\n #2 [ffffb25d8dad3a20] crash_kexec at ffffffff8395a45d\n #3 [ffffb25d8dad3a38] oops_end at ffffffff83836d3f\n #4 [ffffb25d8dad3a58] do_trap at ffffffff83833205\n #5 [ffffb25d8dad3aa0] do_invalid_op at ffffffff83833aa6\n #6 [ffffb25d8dad3ac0] invalid_op at ffffffff84200d18\n    [exception RIP: jbd2_journal_dirty_metadata+0x2ba]\n    RIP: ffffffffc09ca54a  RSP: ffffb25d8dad3b70  RFLAGS: 00010207\n    RAX: 0000000000000000  RBX: ffff9706eedc5248  RCX: 0000000000000000\n    RDX: 0000000000000001  RSI: ffff97337029ea28  RDI: ffff9706eedc5250\n    RBP: ffff9703c3520200   R8: 000000000f46b0b2   R9: 0000000000000000\n    R10: 0000000000000001  R11: 00000001000000fe  R12: ffff97337029ea28\n    R13: 0000000000000000  R14: ffff9703de59bf60  R15: ffff9706eedc5250\n    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018\n #7 [ffffb25d8dad3ba8] ocfs2_journal_dirty at ffffffffc137fb95 [ocfs2]\n #8 [ffffb25d8dad3be8] __ocfs2_move_extent at ffffffffc139a950 [ocfs2]\n #9 [ffffb25d8dad3c80] ocfs2_defrag_extent at ffffffffc139b2d2 [ocfs2]\n\nAnalysis\n\nThis bug has the same root cause of 'commit 7f27ec978b0e (\"ocfs2: call\nocfs2_journal_access_di() before ocfs2_journal_dirty() in\nocfs2_write_end_nolock()\")'.  For this bug, jbd2_journal_restart() is\ncalled by ocfs2_split_extent() during defragmenting.\n\nHow to fix\n\nFor ocfs2_split_extent() can handle journal operations totally by itself. \nCaller doesn't need to call journal access/dirty pair, and caller only\nneeds to call journal start/stop pair.  The fix method is to remove\njournal access/dirty from __ocfs2_move_extent().\n\nThe discussion for this patch:\nhttps://oss.oracle.com/pipermail/ocfs2-devel/2023-February/000647.html","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-617"],"references":["https://git.kernel.org/stable/c/2c559b3ba8e0b9e3c4bb08159a28ccadc698410f","https://git.kernel.org/stable/c/33665d1042666f2e5c736a3df1f453e31f030663","https://git.kernel.org/stable/c/590507ebabd33cd93324c04f9a5538309a5ba934","https://git.kernel.org/stable/c/5f43d34a51ed30e6a60f7e59d224a63014fe2cd5","https://git.kernel.org/stable/c/60eed1e3d45045623e46944ebc7c42c30a4350f0"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2023-53564","score":0.00149,"percentile":0.04046,"date":"2026-11-01"},"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."]}