CVE Intelligence
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CVE-2026-80594 — Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing

In the Linux kernel, the following vulnerability has been resolved: Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing The driver parses CDC union descriptors in ims_pcu_get_cdc_union_desc() by iterating through the extra descriptor data. However, it does not verify that the bLength of each descriptor is at least 2. A malicious device could provide a descriptor with bLength = 0, leading to an infinite loop in the driver. Add a check to ensure bLength is at least 2 before proceeding with parsing.

Published Aug 28, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.2% (30-day exploitation probability)+2

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.22%
ahead of 12% of scored CVEs · Oct 27, 2026
Affects
Linux
Linux
CVSS base
—
Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Linux Linux ≥ 628329d52474323938a03826941e166bc7c8eff4 and < 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28≥ 628329d52474323938a03826941e166bc7c8eff4 and < 6314bd9e2a6b3362998dc85485dd4b0f133a3532≥ 628329d52474323938a03826941e166bc7c8eff4 and < 76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32≥ 628329d52474323938a03826941e166bc7c8eff4 and < e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295≥ 628329d52474323938a03826941e166bc7c8eff4 and < b847f2725ef47a26b3d01eca3d54fd811e5a544d≥ 628329d52474323938a03826941e166bc7c8eff4 and < 383934c249a9817d242d02d30bfbc8defbf0d533≥ 628329d52474323938a03826941e166bc7c8eff4 and < bbbe31486cf2d12177462e4a814244c2597c9849≥ 628329d52474323938a03826941e166bc7c8eff4 and < d4579af29e67ca8722db0a1194227f8015c8981d
and 1 more version 3.10
Vulnerable CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 27, 2026 · 12 reading(s) · max 0.22%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Not enough vector or weakness data: use the affected application’s logs as a starting point.
application logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Record published
    Oct 15, 2026
  • Affected products added · linux/linux
    Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
  • Source status changed · → Received
    Oct 15, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 15, 2026 · NIST National Vulnerability Database
  • CVE published
    Aug 28, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

  • CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 4h
  • CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 4h
  • CVE-2026-99211 netlink: reset skb headers before unicast and multicast filtering 4h
  • CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 4h
  • CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 4h
  • CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 4h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No CVSS score published by NVD, the CNA, CISA or GitHub so far.
  • No fixed version, patch or mitigation documented.
  • No CISA SSVC assessment.
  • No CWE classification.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-80594 is "Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.22% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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