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NVD / CVE Program· CNA Linux

CVE-2026-97969: watchdog: msc313e: Fix clock leak and spurious timer in settimeout()

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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 2152a13ee2a9af09a668ebd053a8dbf771dadb80, 2abf99a57b0b71b2b97745981f4039370ab78044, 3db30f315935c2fb0d95f46b7a593b5b4d3ec3d0; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2152a13ee2a9af09a668ebd053a8dbf771dadb80, 2abf99a57b0b71b2b97745981f4039370ab78044, 3db30f315935c2fb0d95f46b7a593b5b4d3ec3d0; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: watchdog: msc313e: Fix clock leak and spurious timer in settimeout() msc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which introduces two severe bugs: 1. If the watchdog is already active, calling start() again will increase the reference count of the clock again. However stop() is only called once, the reference count is unbalance. 2. If the watchdog is stopped, calling settimeout() will start the hardware timer accidentally. Factor out the register-writing logic into a helper function. Only call it in settimeout() if the watchdog is running. Otherwise, simply update `wdev->timeout`.

—No exploit Fix available
Published
Sep 25, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 6th 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 · 0.1%

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

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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

    • 5.14affected
    • e9800b7994642a794afd4894f072541c14277ce8 and later · before 68665016c7b777b44e27b6b0c1e6524c28ebe40aaffected · git
    • e9800b7994642a794afd4894f072541c14277ce8 and later · before 77ef2aa8b46876ca9935f32dd874c517ccf5d880affected · git
    • e9800b7994642a794afd4894f072541c14277ce8 and later · before a1dd0817776ea2a870ba2347001af13ddd4cb321affected · git
    • e9800b7994642a794afd4894f072541c14277ce8 and later · before 2152a13ee2a9af09a668ebd053a8dbf771dadb80affected · git
    • e9800b7994642a794afd4894f072541c14277ce8 and later · before 2abf99a57b0b71b2b97745981f4039370ab78044affected · git
    • e9800b7994642a794afd4894f072541c14277ce8 and later · before faf1eb2895c87a8c0fb920439dddc7e0d97c6a69affected · git
    • e9800b7994642a794afd4894f072541c14277ce8 and later · before 3db30f315935c2fb0d95f46b7a593b5b4d3ec3d0affected · git
    • before 5.14not affected · semver
    • 5.15.222 and later · up to and including 5.15.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.7-17.2.7-1

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-2026-97967Sep 25, 2026 · hwmon: (corsair-cpro) Remove debugfs entries when probe fails
    0Monitor
  • ← EarlierCVE-2026-97968Sep 25, 2026 · hwmon: (corsair-cpro) Create debugfs entries after hwmon registration
    0Monitor
  • Later →CVE-2026-97970Sep 25, 2026 · watchdog: msc313e: Avoid division by zero
    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 Linux2152a13ee2a9af09a668ebd053a8dbf771dadb80Vendor (CNA)
Linux Linux2abf99a57b0b71b2b97745981f4039370ab78044Vendor (CNA)
Linux Linux3db30f315935c2fb0d95f46b7a593b5b4d3ec3d0Vendor (CNA)
Linux Linux68665016c7b777b44e27b6b0c1e6524c28ebe40aVendor (CNA)
Linux Linux77ef2aa8b46876ca9935f32dd874c517ccf5d880Vendor (CNA)
Linux Linuxa1dd0817776ea2a870ba2347001af13ddd4cb321Vendor (CNA)
Linux Linuxfaf1eb2895c87a8c0fb920439dddc7e0d97c6a69Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · 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 (6 more)

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

All records