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NVD / CVE Program· CNA Linux

CVE-2026-93213: of: fix out-of-bounds read in of_alias_scan() stem parser

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 5bb01c657ff9fc807c2c592ca18af34c4fc3bc6f, 9253cfc5a85be1494ce56b4fc6f2d2b509440910, 958d7ee9fcf008ef9d2072c6410ee1bf6abf3b64; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.157.1-1.

Low priority for now. Upgrade to Linux Linux 5bb01c657ff9fc807c2c592ca18af34c4fc3bc6f, 9253cfc5a85be1494ce56b4fc6f2d2b509440910, 958d7ee9fcf008ef9d2072c6410ee1bf6abf3b64; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.157.1-1 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: of: fix out-of-bounds read in of_alias_scan() stem parser The stem parser tests isdigit(*(end - 1)) before checking end > start and so reads one byte before the property name when the name is empty or all digits. Check the bound first.

—No exploit Fix available
Published
Sep 24, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 7th 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%

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 you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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

    • 3.2affected
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before fd0c7bbda81c0e0c1cb7b68d267b87371584f560affected · git
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before 958d7ee9fcf008ef9d2072c6410ee1bf6abf3b64affected · git
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before f7f6c3e32a31f2e1ed12075e8cd22b370a84e67aaffected · git
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before da7a80ddc610a19b0378016a4d816b9355f013a7affected · git
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before 96a9c984dd7c3589a2707a32b62802f98311dbfdaffected · git
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before 9253cfc5a85be1494ce56b4fc6f2d2b509440910affected · git
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before acd1b49043366f43e932308b4db7d3ce568eeadbaffected · git
    • 611cad720148c899db5a383c1c676fd820df7023 and later · before 5bb01c657ff9fc807c2c592ca18af34c4fc3bc6faffected · git
    • before 3.2not 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 7.2.6-17.2.6-1

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-2026-93211Sep 24, 2026 · nfsd: initialize DRC hash table before registering shrinker
    0Monitor
  • ← EarlierCVE-2026-93212Sep 24, 2026 · nfsd: guard nfsd_serv deref in nfsd_file_net_dispose
    0Monitor
  • Later →CVE-2026-93214Sep 24, 2026 · usb: gadget: f_tcm: fix deadlock in usbg_make_tpg()
    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 Linux5bb01c657ff9fc807c2c592ca18af34c4fc3bc6fVendor (CNA)
Linux Linux9253cfc5a85be1494ce56b4fc6f2d2b509440910Vendor (CNA)
Linux Linux958d7ee9fcf008ef9d2072c6410ee1bf6abf3b64Vendor (CNA)
Linux Linux96a9c984dd7c3589a2707a32b62802f98311dbfdVendor (CNA)
Linux Linuxacd1b49043366f43e932308b4db7d3ce568eeadbVendor (CNA)
Linux Linuxda7a80ddc610a19b0378016a4d816b9355f013a7Vendor (CNA)
Linux Linuxf7f6c3e32a31f2e1ed12075e8cd22b370a84e67aVendor (CNA)
Linux Linuxfd0c7bbda81c0e0c1cb7b68d267b87371584f560Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.06.6.157.1-1 · 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).

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 (7 more)

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

All records