CVE-2025-40203

listmount: don't call path_put() under namespace semaphore

HIGH
7.8
CVSS Score
Published: November 12, 2025 at 09:56 PM UTC
Updated: October 19, 2026 at 09:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.8b4c2bea8ceaa50cd42a8f73667389d801a3ecf2d
Vendor states this is fixed in 659874b7ee4976ad9ce476e07fd36bc67b3537f1 (fixed)
Vendor states this is fixed in 9c80da26fda2fdcaac7f92b5908875b3108830ff (fixed)
Vendor states this is fixed in c1f86d0ac322c7e77f6f8dbd216c65d39358ffc0 (fixed)
Vendor states this is fixed in 6.12.54 (unaffected)
Vendor states this is fixed in 6.17.4 (unaffected)
Vendor states this is fixed in 6.18 (unaffected)
Vendor states this is fixed in 6.8 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusDEFERRED

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