VulnerabilityPublished 23 Oct 2026

CVE-2026-98908: Linux kernel · net: microchip: sparx5: clean up PSFP resources on flower setup failure

Source GCVE Database

Authoritative record:CVE-2026-98908· Low

Not known to be exploited · fixed in a7625d408f7f0535c2b0f05d53231d6496acd48b : 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: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in a7625d408f7f0535c2b0f05d53231d6496acd48b, a46ea3f7ee0d3ad3d5e92043232b293be2a305d3, 640c1bd8d359ad34817f5afec0872985e87b49ec +1

Exploitation evidence

Disclosed: evidence found.
CVE published 23 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.

ghsa-5v3g-9pp6-f3cf

What to do

Upgrade Linux kernel to a7625d408f7f0535c2b0f05d53231d6496acd48b, a46ea3f7ee0d3ad3d5e92043232b293be2a305d3, 640c1bd8d359ad34817f5afec0872985e87b49ec or 46e50367338702abe3df661df7795bdada40fef7.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 6ebf182bfdf15bd58ebcf6760b06458694e0fad2, < a7625d408f7f0535c2b0f05d53231d6496acd48b	Fixed in a7625d408f7f0535c2b0f05d53231d6496acd48b
LinuxLinux	Affected ≥ 6ebf182bfdf15bd58ebcf6760b06458694e0fad2, < a46ea3f7ee0d3ad3d5e92043232b293be2a305d3	Fixed in a46ea3f7ee0d3ad3d5e92043232b293be2a305d3
LinuxLinux	Affected ≥ 6ebf182bfdf15bd58ebcf6760b06458694e0fad2, < 640c1bd8d359ad34817f5afec0872985e87b49ec	Fixed in 640c1bd8d359ad34817f5afec0872985e87b49ec
LinuxLinux	Affected ≥ 6ebf182bfdf15bd58ebcf6760b06458694e0fad2, < 46e50367338702abe3df661df7795bdada40fef7	Fixed in 46e50367338702abe3df661df7795bdada40fef7
LinuxLinux	Affected =6.3	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to address this issue by adding error handling paths that release allocated PSFP resources upon setup failure and correcting flow meter ID handling. Users should apply the official kernel updates containing this fix when available. Patch status is not explicitly confirmed in the provided data; therefore, verify the vendor advisory or Linux kernel mailing lists for the exact fixed versions and apply updates accordingly.

Description

A resource management vulnerability in the Linux kernel's Microchip Sparx5 driver was resolved. The flaw involved improper cleanup of PSFP (Per-Stream Filtering and Policing) resources when the flower setup process failed, potentially leading to resource leaks. Specifically, allocated stream gate, flow meter, and stream filter resources were not released on error paths. Additionally, incorrect handling of flow meter IDs could cause erroneous deletion attempts and reference count inconsistencies.

Impact

The vulnerability could lead to resource leaks within the kernel's network driver, potentially causing degraded system performance or instability due to unreleased PSFP resources. Incorrect reference counting might also cause improper deletion attempts, further risking kernel resource mismanagement. There is no indication of direct exploitation or broader impact such as privilege escalation or denial of service beyond resource leakage.

Summary

The Linux kernel vulnerability CVE-2026-98908 concerns the Microchip Sparx5 network driver, where the function sparx5_tc_flower_psfp_setup() allocates several PSFP resources (stream gate, flow meter, stream filter) before adding VCAP actions. If a failure occurs after resource allocation, the function did not properly release these resources, causing resource leaks. Furthermore, sparx5_psfp_fm_add() was modified to correctly return the acquired flow-meter ID to prevent errors in reference counting and deletion logic when reusing existing flow meters. This fix ensures that resources are properly cleaned up on setup failure, preventing potential resource exhaustion or inconsistent state.

References

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