CVE-2026-46080
Estado: En análisisMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: split transactions in dio completion to avoid credit exhaustion
To prevent exceeding the credits limit, modify ocfs2_dio_end_io_write() to handle extents in a batch of transaction.
Additionally, relocate ocfs2_del_inode_from_orphan(). The orphan inode should only be removed from the orphan list after the extent tree update is complete. This ensures that if a crash occurs in the middle of extent tree updates, we won't leave stale blocks beyond EOF.
This patch also changes the logic for updating the inode size and removing orphan, making it similar to ext4_dio_write_end_io(). Both operations are performed only when everything looks good.
Leer descripción completaMostrar menos
Finally, thanks to Jans and Joseph for providing the bug fix prototype and suggestions.
Detalles técnicos trazas, registros y código del informe original
During ocfs2 dio operations, JBD2 may report warnings via following
call trace:
ocfs2_dio_end_io_write
ocfs2_mark_extent_written
ocfs2_change_extent_flag
ocfs2_split_extent
ocfs2_try_to_merge_extent
ocfs2_extend_rotate_transaction
ocfs2_extend_trans
jbd2__journal_restart
start_this_handle
output: JBD2: kworker/6:2 wants too many credits credits:5450 rsv_credits:0 max:5449CVSS
- 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: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 5/10/2026
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
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/069c3fb310e9336cf48cfdf8748a32c29fd0193d
- https://git.kernel.org/stable/c/1e99bb19994246514d63e656492904176f9d5edd
- https://git.kernel.org/stable/c/3c636a3edca9c3f180b3079f94fe7e115730d9c6
- https://git.kernel.org/stable/c/886f97fa59d0bbfa9859fb1a66dd9e014b522d89
- https://git.kernel.org/stable/c/91e05ac2336d00d5b99fc774be4bd50039084796
- https://git.kernel.org/stable/c/97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8
- https://git.kernel.org/stable/c/d647c5b2fbf81560818dacade360abc8c00a9665
- https://git.kernel.org/stable/c/ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: split transactions in dio completion to avoid credit exhaustion\n\nDuring ocfs2 dio operations, JBD2 may report warnings via following\ncall trace:\nocfs2_dio_end_io_write\n ocfs2_mark_extent_written\n ocfs2_change_extent_flag\n ocfs2_split_extent\n ocfs2_try_to_merge_extent\n ocfs2_extend_rotate_transaction\n ocfs2_extend_trans\n jbd2__journal_restart\n start_this_handle\n output: JBD2: kworker/6:2 wants too many credits credits:5450 rsv_credits:0 max:5449\n\nTo prevent exceeding the credits limit, modify ocfs2_dio_end_io_write() to\nhandle extents in a batch of transaction.\n\nAdditionally, relocate ocfs2_del_inode_from_orphan(). The orphan inode\nshould only be removed from the orphan list after the extent tree update\nis complete. This ensures that if a crash occurs in the middle of extent\ntree updates, we won't leave stale blocks beyond EOF.\n\nThis patch also changes the logic for updating the inode size and removing\norphan, making it similar to ext4_dio_write_end_io(). Both operations are\nperformed only when everything looks good.\n\nFinally, thanks to Jans and Joseph for providing the bug fix prototype and\nsuggestions."
}
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