FKIE_CVE-2023-53564
Vulnerability from fkie_nvd - Published: 2025-10-04 16:15 - Updated: 2026-02-12 15:57
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix defrag path triggering jbd2 ASSERT
code path:
ocfs2_ioctl_move_extents
ocfs2_move_extents
ocfs2_defrag_extent
__ocfs2_move_extent
+ ocfs2_journal_access_di
+ ocfs2_split_extent //sub-paths call jbd2_journal_restart
+ ocfs2_journal_dirty //crash by jbs2 ASSERT
crash stacks:
PID: 11297 TASK: ffff974a676dcd00 CPU: 67 COMMAND: "defragfs.ocfs2"
#0 [ffffb25d8dad3900] machine_kexec at ffffffff8386fe01
#1 [ffffb25d8dad3958] __crash_kexec at ffffffff8395959d
#2 [ffffb25d8dad3a20] crash_kexec at ffffffff8395a45d
#3 [ffffb25d8dad3a38] oops_end at ffffffff83836d3f
#4 [ffffb25d8dad3a58] do_trap at ffffffff83833205
#5 [ffffb25d8dad3aa0] do_invalid_op at ffffffff83833aa6
#6 [ffffb25d8dad3ac0] invalid_op at ffffffff84200d18
[exception RIP: jbd2_journal_dirty_metadata+0x2ba]
RIP: ffffffffc09ca54a RSP: ffffb25d8dad3b70 RFLAGS: 00010207
RAX: 0000000000000000 RBX: ffff9706eedc5248 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff97337029ea28 RDI: ffff9706eedc5250
RBP: ffff9703c3520200 R8: 000000000f46b0b2 R9: 0000000000000000
R10: 0000000000000001 R11: 00000001000000fe R12: ffff97337029ea28
R13: 0000000000000000 R14: ffff9703de59bf60 R15: ffff9706eedc5250
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#7 [ffffb25d8dad3ba8] ocfs2_journal_dirty at ffffffffc137fb95 [ocfs2]
#8 [ffffb25d8dad3be8] __ocfs2_move_extent at ffffffffc139a950 [ocfs2]
#9 [ffffb25d8dad3c80] ocfs2_defrag_extent at ffffffffc139b2d2 [ocfs2]
Analysis
This bug has the same root cause of 'commit 7f27ec978b0e ("ocfs2: call
ocfs2_journal_access_di() before ocfs2_journal_dirty() in
ocfs2_write_end_nolock()")'. For this bug, jbd2_journal_restart() is
called by ocfs2_split_extent() during defragmenting.
How to fix
For ocfs2_split_extent() can handle journal operations totally by itself.
Caller doesn't need to call journal access/dirty pair, and caller only
needs to call journal start/stop pair. The fix method is to remove
journal access/dirty from __ocfs2_move_extent().
The discussion for this patch:
https://oss.oracle.com/pipermail/ocfs2-devel/2023-February/000647.html
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
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"lang": "en",
"value": "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 \u0027commit 7f27ec978b0e (\"ocfs2: call\nocfs2_journal_access_di() before ocfs2_journal_dirty() in\nocfs2_write_end_nolock()\")\u0027. 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\u0027t 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"
}
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"id": "CVE-2023-53564",
"lastModified": "2026-02-12T15:57:04.923",
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"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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