CVE-2026-68269

Local information disclosure via unguarded submit-slot index

Published Aug 10, 2026 · Updated Aug 10, 2026

Spectre mitigation bypass in Linux allows local users to infer sensitive data through an i915 parallel-submission slot. In i915_gem_context.c, a userspace-controlled slot selects a parallel context without a nospec guard, permitting speculative access beyond the validated index. Reachability requires Intel graphics and i915 parallel submission; systems without Intel graphics are unaffected.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Spectre mitigation bypass in Linux allows local users to infer sensitive data through an i915 parallel-submission slot. In i915_gem_context.c, a userspace-controlled slot selects a parallel context without a nospec guard, permitting speculative access beyond the validated index. Reachability requires Intel graphics and i915 parallel submission; systems without Intel graphics are unaffected.

The record

CVE
CVE-2026-68269
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-515
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=5.16
  2. Affected versionversion=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <45db277b2e1e34bcc99a0852026791108339ec3e
  3. Affected versionversion=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <4a27275d275971c9ea29d3d240ea4a224ad368a2
  4. Affected versionversion=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <914a76a9f08366434bf595700f62026b7a19a9cc
  5. Affected versionversion=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <be393175306694de5da1d1a23a8ea4149baa09f1
  6. Affected versionversion=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <c41a54619e95f860bf2950dd679ab353380ecd2b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <45db277b2e1e34bcc99a0852026791108339ec3e; version=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <4a27275d275971c9ea29d3d240ea4a224ad368a2; version=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <914a76a9f08366434bf595700f62026b7a19a9cc; version=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <be393175306694de5da1d1a23a8ea4149baa09f1; version=e5e32171a2cf1e434d4f88e12467f3e47d0ec618 <c41a54619e95f860bf2950dd679ab353380ecd2b

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-515Covert Storage Channel

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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