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NVD / CVE Program· CNA Linux

CVE-2026-80605: HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()

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 0021eb09041f021c079be1022934a280f7f176c0, 42dc0b7b55fe0499fc09183f34a1c46d1dcccf77, 48caee2c106b03301c72fe389ebff00d852c58d5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0021eb09041f021c079be1022934a280f7f176c0, 42dc0b7b55fe0499fc09183f34a1c46d1dcccf77, 48caee2c106b03301c72fe389ebff00d852c58d5 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: HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait() In picolcd_send_and_wait(), an integer overflow of the signed loop counter 'k' can theoretically lead to a NULL pointer dereference of 'raw_data'. If the loop executes more than INT_MAX times, 'k' becomes negative, making the condition 'k < size' true even when 'size' is 0. Change the type of 'k' to 'unsigned int' to prevent the overflow and eliminate the out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool. [jkosina@suse.com: extended hash length]

—No exploit Fix available
Published
Aug 28, 2026
Updated
Nov 6, 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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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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

    • 3.7affected
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before 42dc0b7b55fe0499fc09183f34a1c46d1dcccf77affected · git
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before 48caee2c106b03301c72fe389ebff00d852c58d5affected · git
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before dc176447c7279435c46735db7da81aed1ec25cc2affected · git
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before a02d5d7ad7ae5fa3756b8332f7350e973085dcb3affected · git
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61affected · git
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before d354e523c6f740db758cafcd4c11bb7913285ed8affected · git
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before ef649703dce0df1364fcec3cdad9b32d1c522939affected · git
    • fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 and later · before 0021eb09041f021c079be1022934a280f7f176c0affected · git
    • before 3.7not 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-2026-80603Aug 28, 2026 · netfilter: nf_conntrack_irc: fix parse_dcc() off-by-one OOB read
    36Monitor
  • ← EarlierCVE-2026-80604Aug 28, 2026 · HID: core: Fix OOB read in hid_get_report for numbered reports
    35Monitor
  • Later →CVE-2026-80606Aug 28, 2026 · drm/xe/userptr: Hold notifier_lock for write on inject test path
    31Monitor

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 Linux0021eb09041f021c079be1022934a280f7f176c0Vendor (CNA)
Linux Linux42dc0b7b55fe0499fc09183f34a1c46d1dcccf77Vendor (CNA)
Linux Linux48caee2c106b03301c72fe389ebff00d852c58d5Vendor (CNA)
Linux Linuxa02d5d7ad7ae5fa3756b8332f7350e973085dcb3Vendor (CNA)
Linux Linuxd354e523c6f740db758cafcd4c11bb7913285ed8Vendor (CNA)
Linux Linuxdc176447c7279435c46735db7da81aed1ec25cc2Vendor (CNA)
Linux Linuxe4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61Vendor (CNA)
Linux Linuxef649703dce0df1364fcec3cdad9b32d1c522939Vendor (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. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

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

All records