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

CVE-2026-98498: net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()

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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 0bf6bb567f0edaa771e7dd208ef98da50e6a4485, 1f13989a0704bd98cab09f9bee63e2c8a98ad4dd, 288721013605b4e0304e10f6a087b77f71cfad11; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0bf6bb567f0edaa771e7dd208ef98da50e6a4485, 1f13989a0704bd98cab09f9bee63e2c8a98ad4dd, 288721013605b4e0304e10f6a087b77f71cfad11; 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: net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get() When the reverse entry is found but its counter is already being released, refcount_inc_not_zero() fails and the reference taken by mlx5_tc_ct_entry_get() is never dropped before falling through to create_counter. Drop it so the reverse entry is not kept alive forever by a shared counter lookup that did not use it.

—No exploit Fix available
Published
Oct 18, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th 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 you'll hear from us

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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

    • 5.10affected
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before 598daa5f95883f881a54967da40ce0fdfc1fdaa8affected · git
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before 79a3257280a335bbebbcd10d3895e8468bdcd6aeaffected · git
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before c45c997d0c27359b502587897f775c5a277f0bd4affected · git
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before 288721013605b4e0304e10f6a087b77f71cfad11affected · git
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before 60eab87d0a798070bf5a856b1d9e5785ce92da53affected · git
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before 99d8dc51663747078c031acac32edc6d90c8f1f7affected · git
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before 1f13989a0704bd98cab09f9bee63e2c8a98ad4ddaffected · git
    • 1edae2335adfa7006853e8b427f0c7c3f46b51dd and later · before 0bf6bb567f0edaa771e7dd208ef98da50e6a4485affected · git
    • before 5.10not 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 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.9-17.2.9-1

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-2026-98496Oct 18, 2026 · net: airoha: npu: cancel wdt_work after releasing the WDT IRQ
    0Monitor
  • ← EarlierCVE-2026-98497Oct 18, 2026 · net/mlx5e: fix swapped IPv6 IPsec policy masks
    30Monitor
  • Later →CVE-2026-98499Oct 18, 2026 · HID: wacom: fix OOB read in wacom_wac_pen_serial_enforce()
    32Monitor

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 Linux0bf6bb567f0edaa771e7dd208ef98da50e6a4485Vendor (CNA)
Linux Linux1f13989a0704bd98cab09f9bee63e2c8a98ad4ddVendor (CNA)
Linux Linux288721013605b4e0304e10f6a087b77f71cfad11Vendor (CNA)
Linux Linux598daa5f95883f881a54967da40ce0fdfc1fdaa8Vendor (CNA)
Linux Linux60eab87d0a798070bf5a856b1d9e5785ce92da53Vendor (CNA)
Linux Linux79a3257280a335bbebbcd10d3895e8468bdcd6aeVendor (CNA)
Linux Linux99d8dc51663747078c031acac32edc6d90c8f1f7Vendor (CNA)
Linux Linuxc45c997d0c27359b502587897f775c5a277f0bd4Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package 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 7, 2026+20 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

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

All national notices →

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