NVD / CVE Program· CNA Linux

CVE-2026-43111: HID: roccat: fix use-after-free in roccat_report_event

Noroxi assessment

Priority: Monitor (action score 31/100)

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: 0.09% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 181ea51ab0f6370842c5b49cfb86824253a1189e, 20dca865460f7943cf70afca274b60dac371f546, 36bb2d0b915014bbdc5044982b31b57b78045b93.

Low priority for now. Upgrade to Linux Linux 181ea51ab0f6370842c5b49cfb86824253a1189e, 20dca865460f7943cf70afca274b60dac371f546, 36bb2d0b915014bbdc5044982b31b57b78045b93 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: roccat: fix use-after-free in roccat_report_event roccat_report_event() iterates over the device->readers list without holding the readers_lock. This allows a concurrent roccat_release() to remove and free a reader while it's still being accessed, leading to a use-after-free. Protect the readers list traversal with the readers_lock mutex.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2026-12736

Published: May 6, 2026
Updated: Oct 19, 2026
EPSS: 0.0% · 0th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.0%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · Linux: 7.8; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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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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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel2.6.35 and later · before 6.6.136
linux linux kernel6.7 and later · before 6.12.83
linux linux kernel6.13 and later · before 6.18.24
linux linux kernel6.19 and later · before 6.19.14
linux linux kernel7.0

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
- 2.6.35affected
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before 20dca865460f7943cf70afca274b60dac371f546affected · git
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before 441689e3103694caa3e2d62b7d57c7bccefa5e37affected · git
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before 181ea51ab0f6370842c5b49cfb86824253a1189eaffected · git
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before e6a445513fbc6a0329d2d5ff375b6725750ec5a6affected · git
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before e16a6d11bd77b81632165f02cf0d5946df74b3b7affected · git
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before 36bb2d0b915014bbdc5044982b31b57b78045b93affected · git
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before bca0b595e15450dd66b1153c76c4ef1087ee011baffected · git
- 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 and later · before d802d848308b35220f21a8025352f0c0aba15c12affected · git
- before 2.6.35not affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.176-1	6.1.176-1
Debian:13	linux	before 6.12.85-1	6.12.85-1
Debian:14	linux	before 6.19.14-1	6.19.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
90Now
CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2026-43109May 6, 2026 · x86: shadow stacks: proper error handling for mmap lock
22Monitor
← EarlierCVE-2026-43110May 6, 2026 · wifi: brcmfmac: validate bsscfg indices in IF events
35Monitor
Later →CVE-2026-43112May 6, 2026 · fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath
35Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
Linux Linux	181ea51ab0f6370842c5b49cfb86824253a1189e	Vendor (CNA)
Linux Linux	20dca865460f7943cf70afca274b60dac371f546	Vendor (CNA)
Linux Linux	36bb2d0b915014bbdc5044982b31b57b78045b93	Vendor (CNA)
Linux Linux	441689e3103694caa3e2d62b7d57c7bccefa5e37	Vendor (CNA)
Linux Linux	bca0b595e15450dd66b1153c76c4ef1087ee011b	Vendor (CNA)
Linux Linux	d802d848308b35220f21a8025352f0c0aba15c12	Vendor (CNA)
Linux Linux	e16a6d11bd77b81632165f02cf0d5946df74b3b7	Vendor (CNA)
Linux Linux	e6a445513fbc6a0329d2d5ff375b6725750ec5a6	Vendor (CNA)
debian:linux	6.1.176-1 · Debian:12	Package 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.

No history yet (it accumulates with the daily EPSS job).

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).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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

SSVC exploitation— → noneOct 16, 2026, 5:07 PM UTC
Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

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

References

git.kernel.org/stable/c/181ea51ab0f6370842c5b49cfb86824253a1189e

Show all references (8 more)

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

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