CVE-2026-64464

xhci: sideband: fix ring sg table pages leak

N/A
Published: July 25, 2026 at 08:51 AM UTC
Updated: August 17, 2026 at 05:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.16 ≤ v < 6.18.396.16 ≤ v < 7.1.46.16 ≤ v < 7.26.16de66754e9f8029f8ae955a588959b99cab56b506
Vendor states this is fixed in 49f6e3c3ef19f04f6657ed8dce550e36c763abb8 (fixed)
Vendor states this is fixed in 99d00a9e35e311a91d258029d5bb584377296c34 (fixed)
Vendor states this is fixed in a3eaf82ff842d6ca95937ea584417e04828235a6 (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.39 (unaffected)
Vendor states this is fixed in 7.1.4 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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