CVE-2026-98032tracing: Fix subbuf resize races with trace_pipe_raw readers
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: tracing: Fix subbuf resize races with trace_pipe_raw readers Concurrent subbuffer resizes may crash trace_pipe_raw readers or leak uninitialized memory to userspace due to stale size values. Modify ring_buffer_alloc_read_page() to handle the resizing of an existing buffer_data_read_page if necessary and add a new ring_buffer_read_page_size(). This new function enables ring-buffer buffer_data_read_page users to not call the racy ring_buffer_subbuf_size_get(). This makes the spare_size member of ftrace_buffer_info redundant. Finally, handle buffer_data_read_page/reader_page order discrepancy in ring_buffer_read_page(). On a mismatch simply copy manually the data to the buffer_data_read_page.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from bce761d757452ba5eb77e11fecc37a04b67494e7 before 3f30b2cd4eba45c05f822f03f1b0f4077d6d4dc3; from bce761d757452ba5eb77e11fecc37a04b67494e7 before 75b37b8369778b69ce9738d1c97685a1615cb252; from bce761d757452ba5eb77e11fecc37a04b67494e7 before dae8dda341d2d9034a90d59e8a7d502e1263813f | CNA record |
References
- https://git.kernel.org/stable/c/3f30b2cd4eba45c05f822f03f1b0f4077d6d4dc3
- https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252
- https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.