CVE-2022-49318

low-risk
Published 2025-02-26

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.

Do I need to act?

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0.09% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (6)

Patch https://git.kernel.org/stable/c/0a7a1fc7e71eecf2e5053a6c312c9f0dcbb9b8fd
Patch https://git.kernel.org/stable/c/32bea51fe4c6e92c00403739f7547c89219bea88
Patch https://git.kernel.org/stable/c/8c62c5e26345c34d199b4b8c8e69255ba3d0e751
Patch https://git.kernel.org/stable/c/99c09b298e47ebbe345a6da9f268b32a6b0f4582
Patch https://git.kernel.org/stable/c/cd6374af36cc548464d8c47a93fdba7303bb82a4
Patch https://git.kernel.org/stable/c/dc2f78e2d4cc844a1458653d57ce1b54d4a29f21
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal