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xhci: sideband: fix ring sg table pages leak

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 products

Linux
  • <49f6e3c3ef19f04f6657ed8dce550e36c763abb8
  • <a3eaf82ff842d6ca95937ea584417e04828235a6
  • =<6.18.*
  • ==6.16
  • =<7.1.*
  • =<*
  • <6.16
  • <99d00a9e35e311a91d258029d5bb584377296c34