CVE-2026-98007Public exploit

Kernel panic via non-scalar bpf_loop iteration count

Published Sep 25, 2026 · Updated Sep 25, 2026

Improper input validation in the Linux kernel 6.6.15 through 6.7 allows privileged local users to panic the kernel through an eBPF program. The bpf_loop helper accepts a pointer-valued iteration count, and verifier precision backtracking processes it as though it were a scalar upper bound, triggering a backtracking-misuse warning. The program must be submitted with privileges that permit pointer arguments, and service interruption occurs when panic_on_warn is enabled.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in the Linux kernel 6.6.15 through 6.7 allows privileged local users to panic the kernel through an eBPF program. The bpf_loop helper accepts a pointer-valued iteration count, and verifier precision backtracking processes it as though it were a scalar upper bound, triggering a backtracking-misuse warning. The program must be submitted with privileges that permit pointer arguments, and service interruption occurs when panic_on_warn is enabled.

The record

CVE
CVE-2026-98007
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=6.6.15 <6.7
  2. Affected versionversion=6.7
  3. Affected versionversion=bb124da69c47dd98d69361ec13244ece50bec63e <656d40d1ca228ee21a9b3280432479fc9eae75ab
  4. Affected versionversion=bb124da69c47dd98d69361ec13244ece50bec63e <c3fd8e5fd100f122bad503bdc0e9277219533253
  5. Affected versionversion=bb124da69c47dd98d69361ec13244ece50bec63e <e2e1161e03fecff6d2229a81b024337144bfcd97
  6. Affected versionversion=bb124da69c47dd98d69361ec13244ece50bec63e <f8ae8275c721334ee50fafdd986fb83294eb941a
  7. Affected versionversion=bfc5c19b4b48840627af0d0f1c8f4461b276e508

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.6.15 <6.7; version=6.7; version=bb124da69c47dd98d69361ec13244ece50bec63e <656d40d1ca228ee21a9b3280432479fc9eae75ab; version=bb124da69c47dd98d69361ec13244ece50bec63e <c3fd8e5fd100f122bad503bdc0e9277219533253; version=bb124da69c47dd98d69361ec13244ece50bec63e <e2e1161e03fecff6d2229a81b024337144bfcd97; version=bb124da69c47dd98d69361ec13244ece50bec63e <f8ae8275c721334ee50fafdd986fb83294eb941a; version=bfc5c19b4b48840627af0d0f1c8f4461b276e508

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

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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