CVE-2023-53564
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix defrag path triggering jbd2 ASSERT
code path:
crash stacks:
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().
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The discussion for this patch: https://oss.oracle.com/pipermail/ocfs2-devel/2023-February/000647.html
Detalles técnicos trazas, registros y código del informe original
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
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]CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.14%
- Percentil entre todas las CVEs puntuadas: 3
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-617
Referencias
- 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
- https://git.kernel.org/stable/c/669134a66d37258e1c4a5cfbd5b82f547ae30fca
- https://git.kernel.org/stable/c/7f3b1c28e2908755fb248d3ee8ff56826f2387db
- https://git.kernel.org/stable/c/8163ea90d89b7012dd1fa4b28edf5db0c641eca7
JSON original (NVD)
Mostrar
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"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 '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"
}
],
"lastModified": "2026-06-17T06:45:36.937",
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