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

CVE-2026-98168: smb: client: fix reparse buffer bounds in cifs_query_reparse_point()

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 3d67f155fe5813cfb02a551a9a12d6ea06a902e9, 5f0306e731e2f46e91419eae57eee3a241c055e0, 6.12.112; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.

Low priority for now. Upgrade to Linux Linux 3d67f155fe5813cfb02a551a9a12d6ea06a902e9, 5f0306e731e2f46e91419eae57eee3a241c055e0, 6.12.112; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1 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: smb: client: fix reparse buffer bounds in cifs_query_reparse_point() In cifs_query_reparse_point(), the start >= end check before casting to struct reparse_data_buffer * only ensures the start pointer is within the response. It fails to verify that there is enough space remaining for the fixed 8-byte header of the structure. If a server provides a DataOffset that leaves less than 8 bytes remaining, the check passes, but subsequent reads of ReparseTag and ReparseDataLength will occur out-of-bounds. Fix this by ensuring the remaining space is at least the size of the reparse_data_buffer structure before accessing its fields.

—No exploit Fix available
Published
Oct 6, 2026
Updated
Oct 21, 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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  • 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

    • c13b779d26b3702fba8f7d5fe757aba5bda85fd0, 6.16affected
    • 848d78e3625f15de09d34a562dc49a98b78a62f3 and later · before aa00eead258e4fe8158a3a3e2d65facf06274abdaffected · git
    • 48ca7139ab7f0bbed95ff7a901ea497017769657 and later · before 3d67f155fe5813cfb02a551a9a12d6ea06a902e9affected · git
    • 56e84c64fc257a95728ee73165456b025c48d408 and later · before d1152c96a3002e3df6b9a5b007cecaa7b19b4f79affected · git
    • 56e84c64fc257a95728ee73165456b025c48d408 and later · before 8dc5db3a0e583ea8d31d0613cefd99e93e095c3caffected · git
    • 56e84c64fc257a95728ee73165456b025c48d408 and later · before 5f0306e731e2f46e91419eae57eee3a241c055e0affected · git
    • 6.6.94 and later · before 6.6.160affected · semver
    • 6.12.34 and later · before 6.12.112affected · semver
    • 6.15.3 and later · before 6.16affected · semver
    • before 6.16not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.8-17.2.8-1
openSUSE:Tumbleweedkernel-sourcebefore 7.2.10-1.17.2.10-1.1

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-2026-98166Oct 6, 2026 · drm/ttm: fix swapped-out resources never leaving their bulk_move range
    31Monitor
  • ← EarlierCVE-2026-98167Oct 6, 2026 · smb: client: fix server->total_read for compound encrypted PDUs
    0Monitor
  • Later →CVE-2026-98169Oct 6, 2026 · smb: client: fix potential OOB read in smb3_enum_snapshots()
    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 Linux3d67f155fe5813cfb02a551a9a12d6ea06a902e9Vendor (CNA)
Linux Linux5f0306e731e2f46e91419eae57eee3a241c055e0Vendor (CNA)
Linux Linux6.12.112Vendor (CNA)
Linux Linux6.16Vendor (CNA)
Linux Linux6.6.160Vendor (CNA)
Linux Linux8dc5db3a0e583ea8d31d0613cefd99e93e095c3cVendor (CNA)
Linux Linuxaa00eead258e4fe8158a3a3e2d65facf06274abdVendor (CNA)
Linux Linuxd1152c96a3002e3df6b9a5b007cecaa7b19b4f79Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.8-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · Debian:12Package registry (OSV)
opensuse:kernel-source7.2.10-1.1 · openSUSE:TumbleweedPackage 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 9, 2026+34 d
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).

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. Exploit maturity— → none
  2. Fix✗ → ✓

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

References

Show all references (4 more)

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

All records