VulnerabilityPublished 25 Mar 2026Updated 5 Nov 2026

CVE-2026-23290: Linux kernel · net: usb: pegasus: validate USB endpoints

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in ee31ec8cf1eafeefa85ef934ba688d27f88bf0e2 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in ee31ec8cf1eafeefa85ef934ba688d27f88bf0e2, d5d9086211877361f1bda44a0aec538ddb04042a, c3f1672eaea68c5cb6e1ec081cdb92045453218f +5

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 5 Nov 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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 ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ee31ec8cf1eafeefa85ef934ba688d27f88bf0e2	Fixed in ee31ec8cf1eafeefa85ef934ba688d27f88bf0e2
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d5d9086211877361f1bda44a0aec538ddb04042a	Fixed in d5d9086211877361f1bda44a0aec538ddb04042a
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c3f1672eaea68c5cb6e1ec081cdb92045453218f	Fixed in c3f1672eaea68c5cb6e1ec081cdb92045453218f
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < af7369ae572f53cb701731a4289ec3b3889bc501	Fixed in af7369ae572f53cb701731a4289ec3b3889bc501
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 95556b4e879711693c9865ba0938c148f62d5ea4	Fixed in 95556b4e879711693c9865ba0938c148f62d5ea4
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 43d7c4114b1ec14f41f09306525d3b9382286fc1	Fixed in 43d7c4114b1ec14f41f09306525d3b9382286fc1

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: pegasus: validate USB endpoints The pegasus driver should validate that the device it is probing has the proper number and types of USB endpoints it is expecting before it binds to it. If a malicious device were to not have the same urbs the driver will crash later on when it blindly accesses these endpoints.

References

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