Not yet scoredPublished Sep 11, 2026

CVE-2026-89502ring-buffer: Free cpu_buffer::free_page with subbuf_order

Updated under an hour ago (Oct 26, 2026, 9:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Free cpu_buffer::free_page with subbuf_order When sub-buffers use an order greater than 0, cpu_buffer->free_page is allocated with subbuf_order. Use the correct order for cpu_buffer->free_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 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f9b94daa542a8d2532f0930f01cd9aec2d19621b before 77275ccea06eaf297e8e6ac3fc830cb72086379a; from f9b94daa542a8d2532f0930f01cd9aec2d19621b before 8c1ecdcdea738efe0494af908f12c0ae3a97fffa; from f9b94daa542a8d2532f0930f01cd9aec2d19621b before 81063bbb16c4fcf0136c9117d5e49d3621dd6a1e; from f9b94daa542a8d2532f0930f01cd9aec2d19621b before 234b1a72e9706fe20c08c96f4374ec8e83b934cb	CNA record

References

References

https://git.kernel.org/stable/c/77275ccea06eaf297e8e6ac3fc830cb72086379a
https://git.kernel.org/stable/c/8c1ecdcdea738efe0494af908f12c0ae3a97fffa
https://git.kernel.org/stable/c/81063bbb16c4fcf0136c9117d5e49d3621dd6a1e
https://git.kernel.org/stable/c/234b1a72e9706fe20c08c96f4374ec8e83b934cb

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.