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Review reviewHigh

CVE-2026-64333

Linux

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 missin...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

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 missin...

Affected product and versions

Product
Linux
Affected versions
>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5d9dc88bdf8897788b0eed57113e9eca7fd42ea9, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2f296974acc279f05f284441bfe3064074958d11, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e60e4873e9178da9f4f2674e4c2ff085d5a84f79, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 699dfb6917503b3cda4d5da6941cf79c3c1b4c8b, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a274b3794fe1852c3d9fe6d900b94053c0b03410, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1243f120790042c2ac92e84e797dacc75fff4366, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a3a13fdc53103b07335918e2cdeb465038a71725, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 24ca1fea8f2753bf33e1d458ec1ae5d9b7796a65, >= 2.6.12
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available