VulnerabilityPublished 23 Oct 2026Updated 26 Oct 2026

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

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in a7625d408f7f0535c2b0f05d53231d6496acd48b : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity

Low

Rated Low by Threat Radar's AI analysis · 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.

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

This vulnerability has been fixed in the Linux kernel. The fixes are included in the commits identified by hashes a7625d408f7f0535c2b0f05d53231d6496acd48b, a46ea3f7ee0d3ad3d5e92043232b293be2a305d3, 640c1bd8d359ad34817f5afec0872985e87b49ec, and 46e50367338702abe3df661df7795bdada40fef7. Users and administrators should update to a Linux kernel version that includes these commits to remediate the issue.

Description

A resource management vulnerability in the Linux kernel's Microchip Sparx5 driver was fixed. The flaw involved improper cleanup of PSFP (Per-Stream Filtering and Policing) resources during flower setup failures, which could lead to resource leaks. Specifically, if an error occurred after allocating stream gate, flow meter, and stream filter resources but before completing setup, these resources were not properly released. Additionally, a logic error in handling flow meter IDs could cause incorrect deletion attempts, leaving reference counts improperly incremented.

Impact

The vulnerability could cause resource leaks within the kernel driver, potentially leading to degraded system performance or instability due to unreleased PSFP resources. Incorrect reference counting might also result in improper resource management. There is no indication of direct code execution, privilege escalation, or data corruption. No known exploits in the wild have been reported.

Summary

CVE-2026-98908 addresses a resource leak vulnerability in the Linux kernel's Microchip Sparx5 driver related to PSFP resource management during flower setup failures. The function sparx5_tc_flower_psfp_setup() allocates PSFP stream gate, flow meter, and stream filter resources before adding VCAP actions. If a subsequent step fails, previously allocated resources were not released, causing leaks. Furthermore, sparx5_psfp_fm_add() was modified to correctly return the acquired flow-meter ID to prevent erroneous deletion of flow-meter ID 0 when reusing existing flow meters, which previously led to reference count inconsistencies. The issue was resolved by adding error paths to release allocated resources upon failure and correcting flow meter ID handling.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 09:34 UTC

Technical details

References

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