High 7.8Published Jul 25, 2026

CVE-2026-64333USB: serial: digi_acceleport: fix write buffer corruption

Updated under an hour ago (Oct 28, 2026, 12:00 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: USB: serial: digi_acceleport: fix write buffer corruption The digi_write_inb_command() is supposed to wait for the write urb to become available or return an error, but instead it updates the transfer buffer and tries to resubmit the urb on timeout. To make things worse, for commands like break control where no timeout is used, the driver would corrupt the urb immediately due to a broken jiffies comparison (on 32-bit machines this takes five minutes of uptime to trigger due to INITIAL_JIFFIES). Fix this by adding the missing return on timeout and waiting indefinitely when no timeout has been specified as intended. This issue was (sort of) flagged by Sashiko when reviewing an unrelated change to the driver.

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): CWE-787
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 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 5d9dc88bdf8897788b0eed57113e9eca7fd42ea9; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2f296974acc279f05f284441bfe3064074958d11; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e60e4873e9178da9f4f2674e4c2ff085d5a84f79; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 699dfb6917503b3cda4d5da6941cf79c3c1b4c8b; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a274b3794fe1852c3d9fe6d900b94053c0b03410; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1243f120790042c2ac92e84e797dacc75fff4366; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a3a13fdc53103b07335918e2cdeb465038a71725; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 24ca1fea8f2753bf33e1d458ec1ae5d9b7796a65	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.12.1 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39; from 6.19 before 7.1.4; 2.6.12; and 6 more ranges	NVD

References

References

https://git.kernel.org/stable/c/5d9dc88bdf8897788b0eed57113e9eca7fd42ea9	patch
https://git.kernel.org/stable/c/2f296974acc279f05f284441bfe3064074958d11	patch
https://git.kernel.org/stable/c/e60e4873e9178da9f4f2674e4c2ff085d5a84f79	patch
https://git.kernel.org/stable/c/699dfb6917503b3cda4d5da6941cf79c3c1b4c8b	patch
https://git.kernel.org/stable/c/a274b3794fe1852c3d9fe6d900b94053c0b03410	patch
https://git.kernel.org/stable/c/1243f120790042c2ac92e84e797dacc75fff4366	patch
https://git.kernel.org/stable/c/a3a13fdc53103b07335918e2cdeb465038a71725	patch
https://git.kernel.org/stable/c/24ca1fea8f2753bf33e1d458ec1ae5d9b7796a65	patch

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.