CVE-2026-72309
In the Linux kernel, the following vulnerability has been resolved: tracing/remotes: Fix leak in trace_remote_alloc_buffer() error path If page allocation fails in trace_remote_alloc_buffer(), desc->nr_cpus is not yet incremented for the current CPU. As a consequence, on error, half-allocated rb_desc will not be freed in trace_remote_free_buffer(). Increment desc->nr_cpus as soon as the first allocation for the current CPU has succeeded.
Affected versions
Linux kernel versions
7.1
and later are affected. Fixed in
7.1.5,
7.2-rc3
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-72309?
CVE-2026-72309 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 7.1 onward and has been patched in 7.1.5 and 7.2-rc3. CVE-2026-72309 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-72309?
Yes. CVE-2026-72309 has been patched. Fixed versions include 7.1.5 and 7.2-rc3. If you are running Linux kernel 7.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72309 actively exploited?
No. CVE-2026-72309 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.