CVE-2026-64464
In the Linux kernel, the following vulnerability has been resolved: xhci: sideband: fix ring sg table pages leak xhci_ring_to_sgtable() allocates a temporary pages array and uses it to build the returned sg_table with sg_alloc_table_from_pages(). The error paths free the pages array, but the success path returns the sg_table without freeing it. This leaks the temporary array every time a sideband client gets an endpoint or event ring buffer. Free the pages array after sg_alloc_table_from_pages() succeeds. The returned sg_table has its own scatterlist entries and does not depend on the temporary array after construction.
Affected versions
Linux kernel versions
6.16
and later are affected. Fixed in
6.18.39,
7.1.4,
7.2-rc3
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-64464?
CVE-2026-64464 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.39, 7.1.4 and 7.2-rc3. CVE-2026-64464 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-2026-64464?
Yes. CVE-2026-64464 has been patched. Fixed versions include 6.18.39, 7.1.4 and 7.2-rc3. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64464 actively exploited?
No. CVE-2026-64464 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.