CVE-2025-38218
7.8 · HIGHOverview
CVE-2025-38218 is a high-severity vulnerability affecting linux linux_kernel. It was published on July 4, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on sit_bitmap_size
w/ below testcase, resize will generate a corrupted image which
contains inconsistent metadata, so when mounting such image, it
will trigger kernel panic:
touch img
truncate -s $((512*1024*1024*1024)) img
mkfs.f2fs -f img $((256*1024*1024))
resize.f2fs -s -i img -t $((1024*1024*1024))
mount img /mnt/f2fs
------------[ cut here ]------------
kernel BUG at fs/f2fs/segment.h:863!
Oops: invalid opcode: 0000 [#1] SMP PTI
CPU: 11 UID: 0 PID: 3922 Comm: mount Not tainted 6.15.0-rc1+ #191 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:f2fs_ra_meta_pages+0x47c/0x490
Call Trace:
f2fs_build_segment_manager+0x11c3/0x2600
f2fs_fill_super+0xe97/0x2840
mount_bdev+0xf4/0x140
legacy_get_tree+0x2b/0x50
vfs_get_tree+0x29/0xd0
path_mount+0x487/0xaf0
__x64_sys_mount+0x116/0x150
do_syscall_64+0x82/0x190
e
Remediation
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linux | linux_kernel | >= 3.8, < 5.10.239 | Affected |
References
Frequently Asked Questions
What is CVE-2025-38218?
CVE-2025-38218 is a high-severity vulnerability affecting linux linux_kernel. It was published on July 4, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-38218?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-38218?
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-38218?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-38218 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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