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

CVE-2026-98855: of/overlay: put property on deadprops only after changeset add succeeds

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 004a0ee2e5315f1245775b369fcb940e8cda3807, 4.20, 50c3663790c61648a51f197970f660fd543269a7; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1.

Low priority for now. Upgrade to Linux Linux 004a0ee2e5315f1245775b369fcb940e8cda3807, 4.20, 50c3663790c61648a51f197970f660fd543269a7; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1 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/overlay: put property on deadprops only after changeset add succeeds add_changeset_property() links a new property of a not-yet-live target node into the node's deadprops list before handing it to of_changeset_add_property(). If that fails, the error path frees the property but leaves the freed pointer linked in deadprops, and of_node_release() frees it a second time when the aborted overlay's node is released. Record the changeset entry first and link the property into deadprops only on success. of_changeset_add_property() never looks at the node's property lists, so the order of the two steps is otherwise immaterial, and the error path frees a property that nothing references.

—No exploit Fix available
Published
Oct 18, 2026
Updated
Oct 30, 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%

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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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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

    • b52ca352489be8beb7de3a8181509a0deaf72e21, 5.0affected
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before 004a0ee2e5315f1245775b369fcb940e8cda3807affected · git
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5affected · git
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before 50c3663790c61648a51f197970f660fd543269a7affected · git
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before 936f1ffcb87a1c50938a21176a6463af162cf4b5affected · git
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3aaffected · git
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before 7dc6a769153c0457077a0da4888a00f61e66de15affected · git
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before 5857035a3b53a4e7b5a0d5a740189901ece0b079affected · git
    • f96278810150fc39085d1872e5b39ea06366d03e and later · before 814f2da6995772c07a7c9c2cc6028b6e3f3ecc9caffected · git
    • 4.19.49 and later · before 4.20affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.10-17.2.10-1

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-2026-98853Oct 18, 2026 · net: gso: limit recursive IP-in-IP segmentation
    0Monitor
  • ← EarlierCVE-2026-98854Oct 18, 2026 · of/overlay: only treat a positive changeset id as registered
    0Monitor
  • Later →CVE-2026-98856Oct 18, 2026 · kprobes: Skip disarmed probes when checking optkprobe overlap
    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 Linux004a0ee2e5315f1245775b369fcb940e8cda3807Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux50c3663790c61648a51f197970f660fd543269a7Vendor (CNA)
Linux Linux5857035a3b53a4e7b5a0d5a740189901ece0b079Vendor (CNA)
Linux Linux7dc6a769153c0457077a0da4888a00f61e66de15Vendor (CNA)
Linux Linux814f2da6995772c07a7c9c2cc6028b6e3f3ecc9cVendor (CNA)
Linux Linux936f1ffcb87a1c50938a21176a6463af162cf4b5Vendor (CNA)
Linux Linuxd5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3aVendor (CNA)
Linux Linuxf6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.159.1-1 on Azure Linux 3.06.6.161.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.113-1~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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 9, 2026+21 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 (7 more)

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

All records