CVE-2026-64464

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxde66754e9f8029f8ae955a588959b99cab56b506 < 99d00a9e35e311a91d258029d5bb584377296c34affected
LinuxLinuxde66754e9f8029f8ae955a588959b99cab56b506 < a3eaf82ff842d6ca95937ea584417e04828235a6affected
LinuxLinuxde66754e9f8029f8ae955a588959b99cab56b506 < 49f6e3c3ef19f04f6657ed8dce550e36c763abb8affected
LinuxLinux6.16affected
LinuxLinux0 < 6.16unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc3 <= *unaffected

Weaknesses

References