Is CVE-2026-97922 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-97922 being exploited in the wild.

How severe is CVE-2026-97922?

Informational severity, published 25 September 2026.

Which products and versions are affected?

Unknown Linux kernel affected versions across stable kernels including 4.x, 5.x, 6.x, and 7.x.

Is there a fix for CVE-2026-97922?

A patch was published on 2026-09-11: Upstream fix commit 4bddcb346a6cf4615ca77f69a589623b877ca267 signed by Steven Rostedt Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-97922 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-97922?

Check whether you run Unknown Linux kernel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-97922: Linux kernel memory leak in tracing histogram variable references

CVE-2026-97922 · Severity: info · Published 2026-09-25

The Linux kernel's event tracing subsystem contains a memory leak in the histogram trigger feature. When using the same variable three or more times in a histogram trigger and then removing the trigger, the kernel fails to properly free the variable references and their associated string data, causing memory to leak.

Technologies: Unknown Linux kernel. Vendors: Unknown.

Quick answers

Is CVE-2026-97922 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-97922 being exploited in the wild.
How severe is CVE-2026-97922?: Informational severity, published 25 September 2026.
Which products and versions are affected?: Unknown Linux kernel affected versions across stable kernels including 4.x, 5.x, 6.x, and 7.x.
Is there a fix for CVE-2026-97922?: A patch was published on 2026-09-11: Upstream fix commit 4bddcb346a6cf4615ca77f69a589623b877ca267 signed by Steven Rostedt Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-97922 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-97922?: Check whether you run Unknown Linux kernel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reference counting logic error in the tracing histogram code causes premature return from the destroy function when decrementing a reference count. The vulnerable code in kernel/trace/trace_events_hist.c incorrectly frees histogram variable references only when the count reaches 0 or 1, allowing references with counts of 2 or higher to leak. This affects only the kernel's internal tracing subsystem when histogram triggers with repeated variable references are created and destroyed.

Affected products

<UNKNOWN> Linux kernel affected versions across stable kernels including 4.x, 5.x, 6.x, and 7.x

Timeline

2026-09-25: disclosed: Published in NVD
2026-09-11: patched: Upstream fix commit 4bddcb346a6cf4615ca77f69a589623b877ca267 signed by Steven Rostedt

References

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