High 7.8Published Apr 2, 2024

CVE-2024-26659xhci: handle isoc Babble and Buffer Overrun events properly

Updated under an hour ago (Oct 27, 2026, 8:00 PM ET)

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 04e51901dd44f40a5a385ced897f6bca87d5f40a before 696e4112e5c1ee61996198f0ebb6ca3fab55166e; 04e51901dd44f40a5a385ced897f6bca87d5f40a builds before 2aa7bcfdbb46241c701811bbc0d64d7884e3346c; 04e51901dd44f40a5a385ced897f6bca87d5f40a builds before 2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3; from 04e51901dd44f40a5a385ced897f6bca87d5f40a before f5e7ffa9269a448a720e21f1ed1384d118298c97; from 04e51901dd44f40a5a385ced897f6bca87d5f40a before 418456c0ce56209610523f21734c5612ee634134; from 04e51901dd44f40a5a385ced897f6bca87d5f40a before 7c4650ded49e5b88929ecbbb631efb8b0838e811	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	before 5.10.213; from 5.11 before 5.15.152; from 5.16 before 6.1.82; from 6.2 before 6.6.17; from 6.7 before 6.7.5; 6.8; 6.8	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166e	patch
https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346c	patch
https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3	patch
https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97	patch
https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134	patch
https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	mailing-list
https://cert-portal.siemens.com/productcert/html/ssa-265688.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.