In the Linux kernel, the following vulnerability has been resolved:
nilfs2: prevent out-of-bounds read in super root block parsing
super-root inode metadata size is trusted before nilfs_read_inode_common().
Reject super-root inode sizes whose computed on-disk footprint exceeds the
filesystem block size. This prevents malformed filesystem images from
making nilfs_read_inode_common() read past the end of the super-root block.
[ryusuke: clarify the commit title]
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 8
https://git.kernel.org/stable/c/15c8559376416a84c3d8402fd8d0c89bb323d05f
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/16df2520502867a4f34e202b89d01243d59bb8b5
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/5b69ebe20d7f944c1f45177dca0c11474ac277cc
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7029e70cf86d5c54c0a2812479b0bee2cabcbaaa
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/71bd64471ff583101b4a33dfc838ce29aef57960
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/842397fdfd2e61d6470166c796f3125b6c27a162
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/dcc85fc28f884038735464f6f104dda9c7dbfad6
416baaa9-dc9f-4396-8d5f-8c081fb06d67