CVE-2026-23262

Kernel memory corruption via undersized stats region

Published Mar 18, 2026 · Updated Mar 18, 2026

Out-of-bounds write in the Linux Kernel gve driver allows local users to corrupt kernel memory by increasing device queue counts. The driver resizes its shared stats-report region to the current queue count, while the NIC derives its stats offset from a larger layout and writes beyond the allocation after an increase. Reaching the resize requires CAP_NET_ADMIN in the initial network namespace, effectively uid 0 on Ubuntu; decreasing the count instead creates a gap and inaccurate statistics.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Linux Kernel gve driver allows local users to corrupt kernel memory by increasing device queue counts. The driver resizes its shared stats-report region to the current queue count, while the NIC derives its stats offset from a larger layout and writes beyond the allocation after an increase. Reaching the resize requires CAP_NET_ADMIN in the initial network namespace, effectively uid 0 on Ubuntu; decreasing the count instead creates a gap and inaccurate statistics.

The record

CVE
CVE-2026-23262
Published
Mar 18, 2026
Updated
Mar 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-787
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <11f8311f69e4c361717371b4901ff92daeb76e9c
  2. Affected versionversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <7b9ebcce0296e104a0d82a6b09d68564806158ff
  3. Affected versionversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <837c662f47dac43efa1aef2dd433c6b4b4c073af
  4. Affected versionversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <9d93332397405b62a3300b22d04ac65d990b91ff
  5. Affected versionversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <9fa0a755db3e1945fe00f73fe27d85ef6c8818b7
  6. Affected versionversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <df54838ab61826ecc1a562ffa5e280c3ab7289a7
  7. Affected versionversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <f432f7613c220db32c2c6942420daf7b3f2e7d7e
  8. Affected versionversion=5.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <11f8311f69e4c361717371b4901ff92daeb76e9c; version=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <7b9ebcce0296e104a0d82a6b09d68564806158ff; version=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <837c662f47dac43efa1aef2dd433c6b4b4c073af; version=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <9d93332397405b62a3300b22d04ac65d990b91ff; version=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <9fa0a755db3e1945fe00f73fe27d85ef6c8818b7; version=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <df54838ab61826ecc1a562ffa5e280c3ab7289a7; version=24aeb56f2d38edf1b324bdb4f8bc6faf9f0f540c <f432f7613c220db32c2c6942420daf7b3f2e7d7e; version=5.10

Published CVSS scores

7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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