CVE-2026-93269

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ext4: fix circular lock dependency in ext4_ext_migrate<br /> <br /> Move iput(tmp_inode) after ext4_writepages_up_write() to avoid a<br /> circular lock dependency between s_writepages_rwsem and sb_internal<br /> (freeze protection).<br /> <br /> The deadlock scenario:<br /> <br /> CPU0 (EXT4_IOC_MIGRATE) CPU1 (orphan cleanup during mount)<br /> ---- ----<br /> ext4_ext_migrate()<br /> ext4_writepages_down_write()<br /> s_writepages_rwsem (write)<br /> ext4_evict_inode()<br /> sb_start_intwrite() [sb_internal]<br /> ...<br /> ext4_writepages()<br /> s_writepages_rwsem (read) [BLOCKED]<br /> iput(tmp_inode)<br /> ext4_evict_inode()<br /> sb_start_intwrite() [BLOCKED]<br /> <br /> The tmp_inode is a temporary inode with nlink=0 created solely for<br /> building the extent tree. Its eviction does not require<br /> s_writepages_rwsem protection, so deferring iput() until after<br /> releasing the rwsem is safe.