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NVD / CVE Program· CNA Linux

CVE-2026-97582: hwmon: (gpio-fan) Fix use-after-free in alarm work

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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 30755d3a5782cd704c8921cac8ee66dffe4383ea, 594c62eea7c82f526054496e9fa9b895122a8016, 6e67d9bdac810edacef78cbaeedd34445aa8ceb7; 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 30755d3a5782cd704c8921cac8ee66dffe4383ea, 594c62eea7c82f526054496e9fa9b895122a8016, 6e67d9bdac810edacef78cbaeedd34445aa8ceb7; 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: hwmon: (gpio-fan) Fix use-after-free in alarm work fan_alarm_irq_handler() queues fan_data->alarm_work, but nothing cancels it. fan_alarm_notify() dereferences fan_data and its hwmon device. On unbind, devres frees the interrupt, which only waits for the handler itself, and then releases the hwmon device and fan_data, so a pending fan_alarm_notify() can run after those frees. Replace INIT_WORK() with devm_work_autocancel(), registered before devm_request_irq(). The devres cleanup then frees the interrupt first, so no new work can be queued, and cancels the work while fan_data and the hwmon device are still alive. This issue was found by an in-house static analysis tool.

—No exploit Fix available
Published
Sep 25, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 10th 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%

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

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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

    • 2.6.37affected
    • d6fe1360f42e86262153927986dea6502daff703 and later · before 594c62eea7c82f526054496e9fa9b895122a8016affected · git
    • d6fe1360f42e86262153927986dea6502daff703 and later · before 6e67d9bdac810edacef78cbaeedd34445aa8ceb7affected · git
    • d6fe1360f42e86262153927986dea6502daff703 and later · before e9fc7d53b2eb34c0a607d1659f49b46911aaf16caffected · git
    • d6fe1360f42e86262153927986dea6502daff703 and later · before 9b12bd724db9db318e3a68be17693583dc29a066affected · git
    • d6fe1360f42e86262153927986dea6502daff703 and later · before 30755d3a5782cd704c8921cac8ee66dffe4383eaaffected · git
    • d6fe1360f42e86262153927986dea6502daff703 and later · before c6ab7f855891877a16d2e2ddf0cd0305fd098a85affected · git
    • d6fe1360f42e86262153927986dea6502daff703 and later · before a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293affected · git
    • before 2.6.37not 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-2026-97580Sep 25, 2026 · media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
    31Monitor
  • ← EarlierCVE-2026-97581Sep 25, 2026 · media: verisilicon: hantro: bound G2 HEVC tile loop to the buffer capacity
    0Monitor
  • Later →CVE-2026-97583Sep 25, 2026 · afs: Clear stale peer app data after address list changes
    30Monitor

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 Linux30755d3a5782cd704c8921cac8ee66dffe4383eaVendor (CNA)
Linux Linux594c62eea7c82f526054496e9fa9b895122a8016Vendor (CNA)
Linux Linux6e67d9bdac810edacef78cbaeedd34445aa8ceb7Vendor (CNA)
Linux Linux9b12bd724db9db318e3a68be17693583dc29a066Vendor (CNA)
Linux Linuxa2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293Vendor (CNA)
Linux Linuxc6ab7f855891877a16d2e2ddf0cd0305fd098a85Vendor (CNA)
Linux Linuxe9fc7d53b2eb34c0a607d1659f49b46911aaf16cVendor (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✗ → ✓

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

References

Show all references (6 more)

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

All records