CVE-2022-49318: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: f2fs: remove WARN_ON in f2fs_is_valid_blkaddr Syzbot triggers two WARNs in f2fs_is_valid_blkaddr and __is_bitmap_valid. For example, in f2fs_is_valid_blkaddr, if type is DATA_GENERIC_ENHANCE or DATA_GENERIC_ENHANCE_READ, it invokes WARN_ON if blkaddr is not in the right range. The call trace is as follows: f2fs_get_node_info+0x45f/0x1070 read_node_page+0x577/0x1190 __get_node_page.part.0+0x9e/0x10e0 __get_node_page f2fs_get_node_page+0x109/0x180 do_read_inode f2fs_iget+0x2a5/0x58b0 f2fs_fill_super+0x3b39/0x7ca0 Fix these two WARNs by replacing WARN_ON with dump_stack.

Affected products

• Linux Linux Kernel: before 5.4.198 (fixed in 5.4.198); from 5.5, before 5.10.122 (fixed in 5.10.122); from 5.11, before 5.15.47 (fixed in 5.15.47); from 5.16, before 5.17.15 (fixed in 5.17.15); from 5.18, before 5.18.4 (fixed in 5.18.4)

Published 2025-02-26. Last modified 2026-08-15.