CVE-2025-37816
5.5 · MEDIUMOverview
CVE-2025-37816 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 8, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:
mei: vsc: Fix fortify-panic caused by invalid counted_by() use
gcc 15 honors the __counted_by(len) attribute on vsc_tp_packet.buf[]
and the vsc-tp.c code is using this in a wrong way. len does not contain
the available size in the buffer, it contains the actual packet length
*without* the crc. So as soon as vsc_tp_xfer() tries to add the crc to
buf[] the fortify-panic handler gets triggered:
[ 80.842193] memcpy: detected buffer overflow: 4 byte write of buffer size 0
[ 80.842243] WARNING: CPU: 4 PID: 272 at lib/string_helpers.c:1032 __fortify_report+0x45/0x50
...
[ 80.843175] __fortify_panic+0x9/0xb
[ 80.843186] vsc_tp_xfer.cold+0x67/0x67 [mei_vsc_hw]
[ 80.843210] ? seqcount_lockdep_reader_access.constprop.0+0x82/0x90
[ 80.843229] ? lockdep_hardirqs_on+0x7c/0x110
[ 80.843250] mei_vsc_hw_start+0x98/0x120 [mei_vsc]
[ 80.843270] mei_reset+0x11d/0x420 [mei]
The easiest fix would be to just drop th
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 | >= 6.8, < 6.12.26 | Affected |
Frequently Asked Questions
What is CVE-2025-37816?
CVE-2025-37816 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 8, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2025-37816?
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-37816?
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-2025-37816?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-37816 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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