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

CVE-2026-98953: devlink: fix devlink_rel reference leak when notify work is pending

—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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 8c7830e0120e6e1f5084212fd5b79b3092496f87, 8de57bfec3825effb57fe4d25da98ec3b8fda4c6, c5381ae1cd1481cc431c2bd79460472c6f1d3ce3.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 8c7830e0120e6e1f5084212fd5b79b3092496f87, 8de57bfec3825effb57fe4d25da98ec3b8fda4c6, c5381ae1cd1481cc431c2bd79460472c6f1d3ce3 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: devlink: fix devlink_rel reference leak when notify work is pending devlink_rel_nested_in_notify_work_schedule() takes a reference on the devlink_rel for the notify work and then queues the work, ignoring the return value of schedule_delayed_work(). If the work is already pending, nothing new is queued, the work runs only once and drops only one reference, so the extra one is leaked together with the devlink_rel and its index in devlink_rels. This is easy to hit. devl_register() of a nested instance queues the work, and if the instance is unregistered before the work has run, devlink_rel_put() queues it again while it is still pending. The work also keeps rescheduling itself for as long as the parent devlink lock cannot be taken, which widens the window. Registering and unregistering a nested devlink instance 100 times while holding the parent lock leaks all 100 devlink_rel objects. The reschedule path in devlink_rel_nested_in_notify_work() has the same problem: if the work was queued again while it was running, the reference it holds is never dropped. Drop the reference in both places when the work was already pending. The pending work holds its own reference, so this can not be the last one.

Published
Oct 23, 2026
Updated
Oct 23, 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%

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Noroxi analysis

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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

    • 6.7affected
    • c137743bce02b18c1537d4681aa515f7b80bf0a8 and later · before 8c7830e0120e6e1f5084212fd5b79b3092496f87affected · git
    • c137743bce02b18c1537d4681aa515f7b80bf0a8 and later · before 8de57bfec3825effb57fe4d25da98ec3b8fda4c6affected · git
    • c137743bce02b18c1537d4681aa515f7b80bf0a8 and later · before dc2e787b5fb474241c8a6d18fdacb44adc6d571faffected · git
    • c137743bce02b18c1537d4681aa515f7b80bf0a8 and later · before c5381ae1cd1481cc431c2bd79460472c6f1d3ce3affected · git
    • before 6.7not affected · semver
    • 6.12.113 and later · up to and including 6.12.*not affected · semver
    • 6.18.57 and later · up to and including 6.18.*not affected · semver
    • 7.2.11 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:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.11-17.2.11-1

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-2026-98951Oct 23, 2026 · riscv: ptrace: Zero-initialize regset buffers before copyin
    0Monitor
  • ← EarlierCVE-2026-98952Oct 23, 2026 · pfcp: make sure the SEID is linear before reading it
    29Monitor
  • Later →CVE-2026-98954Oct 23, 2026 · net: always dissect GSO packets in __virtio_net_hdr_to_skb()
    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 Linux8c7830e0120e6e1f5084212fd5b79b3092496f87Vendor (CNA)
Linux Linux8de57bfec3825effb57fe4d25da98ec3b8fda4c6Vendor (CNA)
Linux Linuxc5381ae1cd1481cc431c2bd79460472c6f1d3ce3Vendor (CNA)
Linux Linuxdc2e787b5fb474241c8a6d18fdacb44adc6d571fVendor (CNA)
debian:linux6.12.113-1 · Debian:13Package 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 13, 2026+20 d
EPSS, last 120 days

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

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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

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References

Show all references (3 more)

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

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