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CVE-2026-98405ModerateNetworkRevised 24 Oct

smb: client: fix missing iov bounds check in parse_posix_sids()

MSRC advisory NVD CVE.org

Assessment

Severity
Moderate
CVSS base score
5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Impact
Not stated
EPSS, next 30 days
Not scored yet
Public exploit code
No Nuclei template lists it
Exploitability
Not assessed
Publicly disclosed
No
Customer action
Required: apply the update
Component
Mariner
Weakness
—
Issued by
Linux
Published
16 Oct 2026 · October 2026
Last revised
24 Oct 2026Information published.
CVSS 3.1 base metricsRed raises the risk · green lowers it
Attack vector
NetworkAV:N
Attack complexity
LowAC:L
Privileges required
NonePR:N
User interaction
RequiredUI:R
Scope
UnchangedS:U
Confidentiality
LowC:L
Integrity
NoneI:N
Availability
LowA:L

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

1 affected product
  • azl3 kernel 6.6.157.1-1 on Azure Linux 3.0

What changed

First observed 16 Oct 2026
  1. 25 Oct 2026 · 07:41:18 UTC Last revised21 Oct 2026 18:42 UTC → 24 Oct 2026 14:48 UTC
  2. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
  3. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  4. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
  5. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
  6. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
  7. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  8. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
  9. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  10. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  11. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
  12. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
Show 3 more recent changes
  1. 23 Oct 2026 · 08:31:50 UTCSource coverage: msrc-cvrf Current → Incomplete
  2. 21 Oct 2026 · 20:45:25 UTCLast revised 16 Oct 2026 01:04 UTC → 21 Oct 2026 18:42 UTC
  3. 18 Oct 2026 · 14:54:30 UTCLink: October 2026 → /security?release=2026-Oct#cves

The most recent 100 field changes are listed. Complete recorded revisions are kept separately.

Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.

Explore global source statements, affected packages and advisory history for CVE-2026-98405. The catalog has a separate collection scope from Microsoft release records.

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

2 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

24 Oct 2026 16:17:04 UTC

smb: client: fix missing iov bounds check in parse_posix_sids()

cve-program · CVE-2026-98405 · Published

23 Oct 2026 15:48:27 UTC

smb: client: fix missing iov bounds check in parse_posix_sids()

cve-program · CVE-2026-98405 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 26 Oct 05:31 UTC · 271 of 271 readable · 269 fully read · documentation 464/464 current

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