VulnerabilityPublished 25 Jul 2026Updated 6 Nov 2026

CVE-2026-64335: Linux kernel · USB: serial: digi_acceleport: fix broken rx after throttle

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in eab394781e9321c0c7e97a24fd092387cb262f40 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:19 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in eab394781e9321c0c7e97a24fd092387cb262f40, d5d2660caef78d4c996d34d123574c8e86f5b5ac, abacd67e6f689c62d8a13e3da25f4272bc9ad4af +5

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < eab394781e9321c0c7e97a24fd092387cb262f40	Fixed in eab394781e9321c0c7e97a24fd092387cb262f40
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d5d2660caef78d4c996d34d123574c8e86f5b5ac	Fixed in d5d2660caef78d4c996d34d123574c8e86f5b5ac
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < abacd67e6f689c62d8a13e3da25f4272bc9ad4af	Fixed in abacd67e6f689c62d8a13e3da25f4272bc9ad4af
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 61954033326fc7e637ed2aeeb4b52021e0ee4657	Fixed in 61954033326fc7e637ed2aeeb4b52021e0ee4657
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 92fa3e1a49848509ea3f7995751963fc65095998	Fixed in 92fa3e1a49848509ea3f7995751963fc65095998
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 83a3dfc018943b05b6daf3a6f891833e1aabfa1f	Fixed in 83a3dfc018943b05b6daf3a6f891833e1aabfa1f

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: digi_acceleport: fix broken rx after throttle If the port is closed while throttled, the read urb is never resubmitted and the port will not receive any further data until the device is reconnected (or the driver is rebound). Clear the throttle flags and submit the urb if needed when opening the port.

References

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