Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
04e51901dd44f40a5a385ced897f6bca87d5f40a to < 696e4112e5c1ee61996198f0ebb6ca3fab55166eaffected04e51901dd44f40a5a385ced897f6bca87d5f40a to < 2aa7bcfdbb46241c701811bbc0d64d7884e3346caffected04e51901dd44f40a5a385ced897f6bca87d5f40a to < 2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3affected04e51901dd44f40a5a385ced897f6bca87d5f40a to < f5e7ffa9269a448a720e21f1ed1384d118298c97affected04e51901dd44f40a5a385ced897f6bca87d5f40a to < 418456c0ce56209610523f21734c5612ee634134affected04e51901dd44f40a5a385ced897f6bca87d5f40a to < 7c4650ded49e5b88929ecbbb631efb8b0838e811affected
Linux Linux
Default version status: affected
2.6.36affected0 to < 2.6.36unaffected5.10.213 to ≤ 5.10.*unaffected5.15.152 to ≤ 5.15.*unaffected6.1.82 to ≤ 6.1.*unaffected6.6.17 to ≤ 6.6.*unaffected6.7.5 to ≤ 6.7.*unaffected6.8 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166e ↗
- https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346c ↗
- https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3 ↗
- https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97 ↗
- https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134 ↗
- https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811 ↗
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html ↗