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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 383934c249a9817d242d02d30bfbc8defbf0d533, 6314bd9e2a6b3362998dc85485dd4b0f133a3532, 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 383934c249a9817d242d02d30bfbc8defbf0d533, 6314bd9e2a6b3362998dc85485dd4b0f133a3532, 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Aug 28, 2026
Updated
Aug 28, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • A fix has been released

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Noroxi analysis

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.10affected
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28affected · git
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before 6314bd9e2a6b3362998dc85485dd4b0f133a3532affected · git
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before 76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32affected · git
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295affected · git
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before b847f2725ef47a26b3d01eca3d54fd811e5a544daffected · git
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before 383934c249a9817d242d02d30bfbc8defbf0d533affected · git
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before bbbe31486cf2d12177462e4a814244c2597c9849affected · git
    • 628329d52474323938a03826941e166bc7c8eff4 and later · before d4579af29e67ca8722db0a1194227f8015c8981daffected · git
    • before 3.10not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-80591Aug 28, 2026 · f2fs: fix listxattr handling of corrupted xattr entries
    31Monitor
  • ← EarlierCVE-2026-80592Aug 28, 2026 · samples/damon/mtier: fail early if address range parameters are invalid
    0Monitor
  • Later →CVE-2026-80595Aug 28, 2026 · Input: ims-pcu - add response length checks
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux383934c249a9817d242d02d30bfbc8defbf0d533Vendor (CNA)
Linux Linux6314bd9e2a6b3362998dc85485dd4b0f133a3532Vendor (CNA)
Linux Linux67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28Vendor (CNA)
Linux Linux76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32Vendor (CNA)
Linux Linuxb847f2725ef47a26b3d01eca3d54fd811e5a544dVendor (CNA)
Linux Linuxbbbe31486cf2d12177462e4a814244c2597c9849Vendor (CNA)
Linux Linuxd4579af29e67ca8722db0a1194227f8015c8981dVendor (CNA)
Linux Linuxe3f93d63dcd48c1f0ba9041f2ffa8aea7170e295Vendor (CNA)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records