VulnerabilityPublished 18 Oct 2026

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

Source GCVE Database

Authoritative record:CVE-2026-98498· Low

Not known to be exploited · fixed in c45c997d0c27359b502587897f775c5a277f0bd4 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Low

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c45c997d0c27359b502587897f775c5a277f0bd4, 288721013605b4e0304e10f6a087b77f71cfad11, 598daa5f95883f881a54967da40ce0fdfc1fdaa8 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

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What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 1edae2335adfa7006853e8b427f0c7c3f46b51dd, < c45c997d0c27359b502587897f775c5a277f0bd4	Fixed in c45c997d0c27359b502587897f775c5a277f0bd4
LinuxLinux	Affected ≥ 1edae2335adfa7006853e8b427f0c7c3f46b51dd, < 288721013605b4e0304e10f6a087b77f71cfad11	Fixed in 288721013605b4e0304e10f6a087b77f71cfad11
LinuxLinux	Affected ≥ 1edae2335adfa7006853e8b427f0c7c3f46b51dd, < 598daa5f95883f881a54967da40ce0fdfc1fdaa8	Fixed in 598daa5f95883f881a54967da40ce0fdfc1fdaa8
LinuxLinux	Affected ≥ 1edae2335adfa7006853e8b427f0c7c3f46b51dd, < 99d8dc51663747078c031acac32edc6d90c8f1f7	Fixed in 99d8dc51663747078c031acac32edc6d90c8f1f7
LinuxLinux	Affected ≥ 1edae2335adfa7006853e8b427f0c7c3f46b51dd, < 79a3257280a335bbebbcd10d3895e8468bdcd6ae	Fixed in 79a3257280a335bbebbcd10d3895e8468bdcd6ae
LinuxLinux	Affected ≥ 1edae2335adfa7006853e8b427f0c7c3f46b51dd, < 60eab87d0a798070bf5a856b1d9e5785ce92da53	Fixed in 60eab87d0a798070bf5a856b1d9e5785ce92da53

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix has been applied to the Linux kernel to address this reference leak. Users should update to the patched kernel versions when available. No additional mitigation is specified.

Description

A reference leak vulnerability in the Linux kernel's mlx5 network driver was resolved. The issue involved a failure to drop a reference when a reverse entry's counter was already being released, causing the reverse entry to remain alive indefinitely. This was fixed by ensuring the reference is properly dropped to prevent the leak.

References

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