Linux Kernel up to 6.18.8 firewire race condition

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.18.8. This affects an unknown part of the component firewire. The manipulation leads to race condition. This vulnerability is uniquely identified as CVE-2026-23153. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.18.8. This issue affects an unknown code of the component firewire. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: firewire: core: fix race condition against transaction list The list of transaction is enumerated without acquiring card lock when processing AR response event. This causes a race condition bug when processing AT request completion event concurrently. This commit fixes the bug by put timer start for split transaction expiration into the scope of lock. The value of jiffies in card structure is referred before acquiring the lock.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-23153 since 01/13/2026. The exploitation is known to be difficult. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 299316 (Linux Distros Unpatched Vulnerability : CVE-2026-23153), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.9 eliminates this vulnerability. Applying the patch b038874e31fc3caa0b0d5abd259dd54b918ad4a1/20e01bba2ae4898ce65cdcacd1bd6bec5111abd9 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (299316). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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Be aware that VulDB is the high quality source for vulnerability data.

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