Riskcovery

CVE-2026-64464

xhci: sideband: fix ring sg table pages leak

State
Published
Severity
Not scored
Published
Jul 25, 2026
Updated
Aug 17, 2026
Reserved
Jul 19, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • de66754e9f8029f8ae955a588959b99cab56b506 to before 99d00a9e35e311a91d258029d5bb584377296c34Affected
  • de66754e9f8029f8ae955a588959b99cab56b506 to before a3eaf82ff842d6ca95937ea584417e04828235a6Affected
  • de66754e9f8029f8ae955a588959b99cab56b506 to before 49f6e3c3ef19f04f6657ed8dce550e36c763abb8Affected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.18.39 through 6.18.*Not affected
  • 7.1.4 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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