An issue was discovered in the Linux kernel through 4.17.10. There is a buffer overflow in truncate_inline_inode() in fs/f2fs/inline.c when umounting an f2fs image, because a length value may be negative.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/104917 | vdb entry third party advisory |
| https://bugzilla.kernel.org/show_bug.cgi?id=200421 | issue tracking exploit third party advisory |
| https://usn.ubuntu.com/4094-1/ | vendor advisory |
| https://usn.ubuntu.com/4118-1/ | vendor advisory |