CVE-2024-26659

In the Linux kernel, the following vulnerability has been resolved: xhci: handle isoc Babble and Buffer Overrun events properly xHCI 4.9 explicitly forbids assuming that the xHC has released its ownership of a multi-TRB TD when it reports an error on one of the early TRBs. Yet the driver makes such assumption and releases the TD, allowing the remaining TRBs to be freed or overwritten by new TDs. The xHC should also report completion of the final TRB due to its IOC flag being set by us, regardless of prior errors. This event cannot be recognized if the TD has already been freed earlier, resulting in "Transfer event TRB DMA ptr not part of current TD" error message. Fix this by reusing the logic for processing isoc Transaction Errors. This also handles hosts which fail to report the final completion. Fix transfer length reporting on Babble errors. They may be caused by device malfunction, no guarantee that the buffer has been filled.

• CWE-787

• https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346cPatch
• https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3Patch
• https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134Patch
• https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166ePatch
• https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811Patch
• https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97Patch
• https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346cPatch
• https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3Patch
• https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134Patch
• https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166ePatch
• https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811Patch
• https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97Patch
• https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
• https://cert-portal.siemens.com/productcert/html/ssa-265688.html

Published

Apr 2, 2024

Last Modified

Aug 4, 2026

Status

Modified

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