mirror of https://github.com/torvalds/linux.git
There is an use-after-free problem for 'eba_tbl' in ubi_create_volume()'s
error handling path:
ubi_eba_replace_table(vol, eba_tbl)
vol->eba_tbl = tbl
out_mapping:
ubi_eba_destroy_table(eba_tbl) // Free 'eba_tbl'
out_unlock:
put_device(&vol->dev)
vol_release
kfree(tbl->entries) // UAF
Fix it by removing redundant 'eba_tbl' releasing.
Fetch a reproducer in [Link].
Fixes:
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| attach.c | ||
| block.c | ||
| build.c | ||
| cdev.c | ||
| debug.c | ||
| debug.h | ||
| eba.c | ||
| fastmap-wl.c | ||
| fastmap.c | ||
| gluebi.c | ||
| io.c | ||
| kapi.c | ||
| misc.c | ||
| ubi-media.h | ||
| ubi.h | ||
| upd.c | ||
| vmt.c | ||
| vtbl.c | ||
| wl.c | ||
| wl.h | ||