Bug 2439948 (CVE-2026-23153)

Summary: CVE-2026-23153 kernel: firewire: core: fix race condition against transaction list
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2026-02-14 17:04:28 UTC 
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.
Comment 1 TEJ RATHI 2026-02-16 06:26:28 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026021415-CVE-2026-23153-9e56@gregkh/T