f2fs: fix to avoid potential panic during recovery
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.3%
exploitation probability
0.3%top 81% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to avoid potential panic during recovery
During recovery, if FAULT_BLOCK is on, it is possible that
f2fs_reserve_new_block() will return -ENOSPC during recovery,
then it may trigger panic.
Also, if fault injection rate is 1 and only FAULT_BLOCK fault
type is on, it may encounter deadloop in loop of block reservation.
Let's change as below to fix these issues:
- remove bug_on() to avoid panic.
- limit the loop count of block reservation to avoid potential
deadloop.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/21ec68234826b1b54ab980a8df6e33c74cfbee58https://git.kernel.org/stable/c/8844b2f8a3f0c428b74672f9726f9950b1a7764chttps://git.kernel.org/stable/c/d034810d02a5af8eb74debe29877dcaf5f00fdd1https://git.kernel.org/stable/c/f26091a981318b5b7451d61f99bc073a6af8db67https://git.kernel.org/stable/c/fe4de493572a4263554903bf9c3afc5c196e15f0