High · published July 12, 2024
In the Linux kernel, the following vulnerability has been resolved:
f2fs: remove clear SB_INLINECRYPT flag in default_options
In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set.
If create new file or open file during this gap, these files
will not use inlinecrypt. Worse case, it may lead to data
corruption if wrappedkey_v0 is enable.
Thread A: Thread B:
-f2fs_remount -f2fs_file_open or f2fs_new_inode
-default_options
<- clear SB_INLINECRYPT flag
-fscrypt_select_encryption_impl
-parse_options
<- set SB_INLINECRYPT again
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 3.8, < 5.10.221 | 5.10.221 |
| linux/linux_kernel | ≥ 5.11, < 5.15.162 | 5.15.162 |
| linux/linux_kernel | ≥ 5.16, < 6.1.96 | 6.1.96 |
| linux/linux_kernel | ≥ 6.2, < 6.6.36 | 6.6.36 |
| linux/linux_kernel | ≥ 6.7, < 6.9.7 | 6.9.7 |