Title: kernel de Linux
Description: En el kernel de Linux, se resolvió la siguiente vulnerabilidad: Revertir "md/raid5: Espere MD_SB_CHANGE_PENDING en raid5d" Esto revierte El commit 5e2cf333b7bd5d3e62595a44d598a254c697cd74. Ese commit introdujo la siguiente ejecución y puede provocar que el sistema se cuelgue. md_write_start: raid5d: // mddev->in_sync == 1 set "MD_SB_CHANGE_PENDING" // ejecutándose antes de que md_write_start se despierte esperando "MD_SB_CHANGE_PENDING" borrado >>>>>>>>> colgado despertar mddev->thread ... esperando "MD_SB_CHANGE_PENDING "borrado >>>> colgado, raid5d debería borrar esta bandera pero quedar colgado por la misma bandera. El problema de corrección de commit revertido se solucionó con el último parche de una manera nueva.

In the Linux kernel, the following vulnerability has been resolved:

Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d"

This reverts commit 5e2cf333b7bd5d3e62595a44d598a254c697cd74.

That commit introduced the following race and can cause system hung.

 md_write_start:             raid5d:
 // mddev->in_sync == 1
 set "MD_SB_CHANGE_PENDING"
                            // running before md_write_start wakeup it
                             waiting "MD_SB_CHANGE_PENDING" cleared
                             >>>>>>>>> hung
 wakeup mddev->thread
 ...
 waiting "MD_SB_CHANGE_PENDING" cleared
 >>>> hung, raid5d should clear this flag
 but get hung by same flag.

The issue reverted commit fixing is fixed by last patch in a new way.

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Linux https://git.kernel.org/stable/c/0de40f76d567133b871cd6ad46bb87afbce46983

Linux https://git.kernel.org/stable/c/84c39986fe6dd77aa15f08712339f5d4eb7dbe27

Linux https://git.kernel.org/stable/c/87165c64fe1a98bbab7280c58df3c83be2c98478

Linux https://git.kernel.org/stable/c/aab69ef769707ad987ff905d79e0bd6591812580

Linux https://git.kernel.org/stable/c/bed0acf330b2c50c688f6d9cfbcac2aa57a8e613

Linux https://git.kernel.org/stable/c/bed9e27baf52a09b7ba2a3714f1e24e17ced386d

Linux https://git.kernel.org/stable/c/cfa46838285814c3a27faacf7357f0a65bb5d152

Linux https://git.kernel.org/stable/c/e16a0bbdb7e590a6607b0d82915add738c03c069