CVE-2026-23138None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: tracing: Add recursion protection in kernel stack trace recording A bug was reported about an infinite recursion caused by tracing the rcu events with the kernel stack…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
tracing: Add recursion protection in kernel stack trace recording
A bug was reported about an infinite recursion caused by tracing the rcu events with the kernel stack trace trigger enabled. The stack trace code called back into RCU which then called the stack trace again.
Expand the ftrace recursion protection to add a set of bits to protect events from recursion. Each bit represents the context that the event is in (normal, softirq, interrupt and NMI).
Have the stack trace code use the interrupt context to protect against recursion.
Note, the bug showed an issue in both the RCU code as well as the tracing stacktrace code. This only handles the tracing stack trace side of the bug. The RCU fix will be handled separately.
Linux >= 5f5fa7ea89dc82d34ed458f4d7a8634e8e9eefce < 80fe242a6239778025ba3be8e7263e3d69c37947Linux >= 5f5fa7ea89dc82d34ed458f4d7a8634e8e9eefce < 9b03768037d91ce727effb1c5d92d2c7781bf692Linux >= 5f5fa7ea89dc82d34ed458f4d7a8634e8e9eefce < 19e18e6dabb1bbba76d2809ca7d8ae9e1f5975feLinux >= 5f5fa7ea89dc82d34ed458f4d7a8634e8e9eefce < 5b7f91acffd2c4c000971553d22efa1e1bb4feaeLinux >= 5f5fa7ea89dc82d34ed458f4d7a8634e8e9eefce < 5f1ef0dfcb5b7f4a91a9b0e0ba533efd9f7e2cdbLinux 5.8Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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