Description

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix to wait on block writeback for post_read case

If inode is compressed, but not encrypted, it missed to call
f2fs_wait_on_block_writeback() to wait for GCed page writeback
in IPU write path.

Thread A GC-Thread
- f2fs_gc
- do_garbage_collect
- gc_data_segment
- move_data_block
- f2fs_submit_page_write
migrate normal cluster's block via
meta_inode's page cache
- f2fs_write_single_data_page
- f2fs_do_write_data_page
- f2fs_inplace_write_data
- f2fs_submit_page_bio

IRQ
- f2fs_read_end_io
IRQ
old data overrides new data due to
out-of-order GC and common IO.
- f2fs_read_end_io

Classification

CVE ID: CVE-2023-52682

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 17.81% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/9bfd5ea71521d0e522ba581c6ccc5db93759c0c3
https://git.kernel.org/stable/c/4535be48780431753505e74e1b1ad4836a189bc2
https://git.kernel.org/stable/c/f904c156d8011d8291ffd5b6b398f3747e294986
https://git.kernel.org/stable/c/55fdc1c24a1d6229fe0ecf31335fb9a2eceaaa00

Timeline