CVE-2026-46080
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
27/05/2026
Última modificación:
27/05/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
ocfs2: split transactions in dio completion to avoid credit exhaustion<br />
<br />
During ocfs2 dio operations, JBD2 may report warnings via following<br />
call trace:<br />
ocfs2_dio_end_io_write<br />
ocfs2_mark_extent_written<br />
ocfs2_change_extent_flag<br />
ocfs2_split_extent<br />
ocfs2_try_to_merge_extent<br />
ocfs2_extend_rotate_transaction<br />
ocfs2_extend_trans<br />
jbd2__journal_restart<br />
start_this_handle<br />
output: JBD2: kworker/6:2 wants too many credits credits:5450 rsv_credits:0 max:5449<br />
<br />
To prevent exceeding the credits limit, modify ocfs2_dio_end_io_write() to<br />
handle extents in a batch of transaction.<br />
<br />
Additionally, relocate ocfs2_del_inode_from_orphan(). The orphan inode<br />
should only be removed from the orphan list after the extent tree update<br />
is complete. This ensures that if a crash occurs in the middle of extent<br />
tree updates, we won&#39;t leave stale blocks beyond EOF.<br />
<br />
This patch also changes the logic for updating the inode size and removing<br />
orphan, making it similar to ext4_dio_write_end_io(). Both operations are<br />
performed only when everything looks good.<br />
<br />
Finally, thanks to Jans and Joseph for providing the bug fix prototype and<br />
suggestions.
Impacto
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/069c3fb310e9336cf48cfdf8748a32c29fd0193d
- https://git.kernel.org/stable/c/3c636a3edca9c3f180b3079f94fe7e115730d9c6
- https://git.kernel.org/stable/c/886f97fa59d0bbfa9859fb1a66dd9e014b522d89
- https://git.kernel.org/stable/c/d647c5b2fbf81560818dacade360abc8c00a9665
- https://git.kernel.org/stable/c/ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e



