CVE-2026-23153 firewire: core: fix race condition against transaction list

What is CVE-2026-23153?

CVE-2026-23153 is a medium-severity vulnerability in Linux kernel, published on 14 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-362

Which versions are affected by CVE-2026-23153?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-23153?

Apply the vendor's patch.

Is CVE-2026-23153 being exploited?

There is no known exploitation of CVE-2026-23153 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-23153, DEBIAN-CVE-2026-23153, GHSA-7q43-7j7f-g59m, UBUNTU-CVE-2026-23153.