CVE-2025-40203
High
Description
In the Linux kernel, the following vulnerability has been resolved: listmount: don't call path_put() under namespace semaphore Massage listmount() and make sure we don't call path_put() under the namespace semaphore. If we put the last reference we're fscked.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux
PublishedNov 12, 2025
First seenNov 12, 2025
How to fix
Update
- Linux Linux659874b7ee4976ad9ce476e07fd36bc67b3537f1, 9c80da26fda2fdcaac7f92b5908875b3108830ff, c1f86d0ac322c7e77f6f8dbd216c65d39358ffc0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | b4c2bea8ceaa50cd42a8f73667389d801a3ecf2d ≤ v < 659874b7ee4976ad9ce476e07fd36bc67b3537f1, b4c2bea8ceaa50cd42a8f73667389d801a3ecf2d ≤ v < 9c80da26fda2fdcaac7f92b5908875b3108830ff, b4c2bea8ceaa50cd42a8f73667389d801a3ecf2d ≤ v < c1f86d0ac322c7e77f6f8dbd216c65d39358ffc0, 6.8 | 659874b7ee4976ad9ce476e07fd36bc67b3537f1, 9c80da26fda2fdcaac7f92b5908875b3108830ff, c1f86d0ac322c7e77f6f8dbd216c65d39358ffc0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.