CVE-2026-53092

Local privilege escalation via aliased eBPF registers

Published Jun 24, 2026 · Updated Jun 24, 2026

Incorrect state tracking in the Linux Kernel eBPF verifier from 6.11 allows local users to read or modify kernel memory via crafted BPF bytecode. The adjust_reg_min_max_vals() path updates dst_reg when source and destination alias, then derives the delta from that modified value and sync_linked_regs() propagates the false bounds. Reaching BPF_PROG_LOAD requires CAP_BPF or CAP_SYS_ADMIN in the initial user namespace, or a delegated BPF token; successful abuse grants elevated privileges or panics the host.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect state tracking in the Linux Kernel eBPF verifier from 6.11 allows local users to read or modify kernel memory via crafted BPF bytecode. The adjust_reg_min_max_vals() path updates dst_reg when source and destination alias, then derives the delta from that modified value and sync_linked_regs() propagates the false bounds. Reaching BPF_PROG_LOAD requires CAP_BPF or CAP_SYS_ADMIN in the initial user namespace, or a delegated BPF token; successful abuse grants elevated privileges or panics the host.

The record

CVE
CVE-2026-53092
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-393, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=6.11
  2. Affected versionversion=98d7ca374ba4b39e7535613d40e159f09ca14da2 <cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de
  3. Affected versionversion=98d7ca374ba4b39e7535613d40e159f09ca14da2 <d7f14173c0d5866c3cae759dee560ad1bed10d2e
  4. Affected versionversion=98d7ca374ba4b39e7535613d40e159f09ca14da2 <d88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.11; version=98d7ca374ba4b39e7535613d40e159f09ca14da2 <cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de; version=98d7ca374ba4b39e7535613d40e159f09ca14da2 <d7f14173c0d5866c3cae759dee560ad1bed10d2e; version=98d7ca374ba4b39e7535613d40e159f09ca14da2 <d88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.4Red HatCVSS:3.1/AV:L/AC:H/PR:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-393Return of Wrong Status Code
T1068Exploitation for Privilege Escalation

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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