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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98439: smb/server: cancel async requests when closing connection

—No exploit Fix available

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: 0.15% (FIRST EPSS).
  • Fixed version: Linux Linux 0947087678f465b64eba2acebe808d5c6cfea036, 2a6ad0d06934628f10fb53513921efbb42e44745, 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to Linux Linux 0947087678f465b64eba2acebe808d5c6cfea036, 2a6ad0d06934628f10fb53513921efbb42e44745, 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes 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: smb/server: cancel async requests when closing connection An async request may still be waiting when a connection is closed. This can stop the connection from closing. Cancel active async requests before waiting for them to finish.

Published
Oct 18, 2026
Updated
Nov 10, 2026
EPSS
0.1% · 4th 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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  • when exploit code appears or is weaponized
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  • 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

    • 5.15affected
    • 0626e6641f6b467447c81dd7678a69c66f7746cf and later · before 2a6ad0d06934628f10fb53513921efbb42e44745affected · git
    • 0626e6641f6b467447c81dd7678a69c66f7746cf and later · before bbcfc51648fbf32f8c899163b0851fa812628080affected · git
    • 0626e6641f6b467447c81dd7678a69c66f7746cf and later · before 0947087678f465b64eba2acebe808d5c6cfea036affected · git
    • 0626e6641f6b467447c81dd7678a69c66f7746cf and later · before 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851affected · git
    • before 5.15not affected · semver
    • 6.12.117 and later · up to and including 6.12.*not affected · semver
    • 6.18.61 and later · up to and including 6.18.*not affected · semver
    • 7.2.7 and later · up to and including 7.2.*not affected · semver
    • 7.3 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
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-2026-98437Oct 18, 2026 · media: qcom: iris: fix runtime PM reference leaks
    0Monitor
  • ← EarlierCVE-2026-98438Oct 18, 2026 · mptcp: options: fix uninit-value in mptcp_write_data_fin
    0Monitor
  • Later →CVE-2026-98440Oct 18, 2026 · KVM: arm64: nv: Delay freeing of shadow S2 structures until VM destruction
    28Monitor

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 Linux0947087678f465b64eba2acebe808d5c6cfea036Vendor (CNA)
Linux Linux2a6ad0d06934628f10fb53513921efbb42e44745Vendor (CNA)
Linux Linux4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851Vendor (CNA)
Linux Linuxbbcfc51648fbf32f8c899163b0851fa812628080Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
debian:linux7.2.7-1 · Debian:14Package 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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 12, 2026+25 d
EPSS, last 120 days

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

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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.

References

Show all references (3 more)

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

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