VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-90105: Linux kernel · vxlan: fix reading neigh ha

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f43ef9a3f9c121472a0754c9e9bff13317ace0f7 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f43ef9a3f9c121472a0754c9e9bff13317ace0f7, ecc8bac11a101e5f6989a14b92e17b51f9761630, b824059a673b2283e78c7aae2c7d257aad7f0e1d +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e4f67addf158f98f8197e08974966b18480dc751, < f43ef9a3f9c121472a0754c9e9bff13317ace0f7	Fixed in f43ef9a3f9c121472a0754c9e9bff13317ace0f7
LinuxLinux	Affected ≥ e4f67addf158f98f8197e08974966b18480dc751, < ecc8bac11a101e5f6989a14b92e17b51f9761630	Fixed in ecc8bac11a101e5f6989a14b92e17b51f9761630
LinuxLinux	Affected ≥ e4f67addf158f98f8197e08974966b18480dc751, < b824059a673b2283e78c7aae2c7d257aad7f0e1d	Fixed in b824059a673b2283e78c7aae2c7d257aad7f0e1d
LinuxLinux	Affected ≥ e4f67addf158f98f8197e08974966b18480dc751, < 6093baf2b2c57e7da33bacd2223570a78b416d89	Fixed in 6093baf2b2c57e7da33bacd2223570a78b416d89
LinuxLinux	Affected ≥ e4f67addf158f98f8197e08974966b18480dc751, < 751cb520f9e47538b7223df133806a29fc41f54f	Fixed in 751cb520f9e47538b7223df133806a29fc41f54f
LinuxLinux	Affected =3.8	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: vxlan: fix reading neigh ha Currently arp/neigh_reduce read neigh ha directly which can lead to partial reads while the neigh is being updated. Use neigh_ha_snapshot to take a stable snapshot of the address similar to route_shortcircuit which already does the right thing.

References

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