VulnerabilityPublished 18 Oct 2026

CVE-2026-98630: Linux kernel · eth: fbnic: Fix payload page pool error cleanup

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f4277b19edbc6abc9e1db7d6f6148608e8cb3c34 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f4277b19edbc6abc9e1db7d6f6148608e8cb3c34, 8e0b235bd918d06f54ba8fddd2c3ddc36ca59c15, 4bab07f7b74e59bb26032fa5ff6969d63e1c52ef

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.

What to do

Upgrade Linux kernel to f4277b19edbc6abc9e1db7d6f6148608e8cb3c34, 8e0b235bd918d06f54ba8fddd2c3ddc36ca59c15 or 4bab07f7b74e59bb26032fa5ff6969d63e1c52ef.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 8a11010fdd9615e8dbb2f5d562ab88caa8a9516a, < f4277b19edbc6abc9e1db7d6f6148608e8cb3c34	Fixed in f4277b19edbc6abc9e1db7d6f6148608e8cb3c34
LinuxLinux	Affected ≥ 8a11010fdd9615e8dbb2f5d562ab88caa8a9516a, < 8e0b235bd918d06f54ba8fddd2c3ddc36ca59c15	Fixed in 8e0b235bd918d06f54ba8fddd2c3ddc36ca59c15
LinuxLinux	Affected ≥ 8a11010fdd9615e8dbb2f5d562ab88caa8a9516a, < 4bab07f7b74e59bb26032fa5ff6969d63e1c52ef	Fixed in 4bab07f7b74e59bb26032fa5ff6969d63e1c52ef
LinuxLinux	Affected =6.18	Fixed in–

AI-suggested

A fix is available and has been applied in specific Linux kernel commits. Users should update to a kernel version that includes these fixes to remediate the vulnerability.

Description

A vulnerability in the Linux kernel's fbnic network driver involves improper cleanup of the payload page pool when allocation fails. The error pointer is incorrectly passed to page_pool_destroy(), potentially causing a dereference of an error pointer and leaving the header page pool allocated. This issue has been fixed by ensuring the header page pool is properly destroyed during cleanup.

Impact

If triggered, this flaw could cause improper cleanup leading to resource leakage in the kernel's network driver. There is no indication of direct code execution or privilege escalation from the provided data. No known exploits in the wild have been reported.

Summary

The Linux kernel fbnic driver had a flaw in its error handling during payload page pool allocation failure. Instead of destroying the header page pool, the cleanup path passed an error pointer to page_pool_destroy(), which could lead to dereferencing an invalid pointer and resource leakage. The fix corrects this by properly destroying the header page pool in the error cleanup path. This vulnerability affects Linux kernel version 6.18 and has been addressed in specific commits identified by their hashes.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 10:07 UTC

Technical details

References

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