CVE-2025-37779
7.8 · HIGHOverview
CVE-2025-37779 is a high-severity vulnerability affecting linux linux_kernel. It was published on May 1, 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:
lib/iov_iter: fix to increase non slab folio refcount
When testing EROFS file-backed mount over v9fs on qemu, I encountered a
folio UAF issue. The page sanity check reports the following call trace.
The root cause is that pages in bvec are coalesced across a folio bounary.
The refcount of all non-slab folios should be increased to ensure
p9_releas_pages can put them correctly.
BUG: Bad page state in process md5sum pfn:18300
page: refcount:0 mapcount:0 mapping:00000000d5ad8e4e index:0x60 pfn:0x18300
head: order:0 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
aops:z_erofs_aops ino:30b0f dentry name(?):"GoogleExtServicesCn.apk"
flags: 0x100000000000041(locked|head|node=0|zone=1)
raw: 0100000000000041 dead000000000100 dead000000000122 ffff888014b13bd0
raw: 0000000000000060 0000000000000020 00000000ffffffff 0000000000000000
head: 0100000000000041 dead000000000100 dead000000000122 ffff888014b13bd0
head: 000
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 | >= 6.14.1, < 6.14.4 | Affected |
Frequently Asked Questions
What is CVE-2025-37779?
CVE-2025-37779 is a high-severity vulnerability affecting linux linux_kernel. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-37779?
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-2025-37779?
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-2025-37779?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-37779 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.
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