CVE-2024-46866

Kernel crash via unlocked buffer inspection

Published Sep 27, 2024 · Updated Aug 5, 2026

Improper locking in the Linux kernel Xe DRM client in 6.8 through 6.10.10 allows local users to crash the kernel via fdinfo access. The show_meminfo() path calls bo_meminfo() without holding the buffer-object lock, so concurrent TTM state changes trigger null-pointer dereferences or use-after-free access. Exploitation requires local Xe DRM access and a race during memory-state inspection; the bounded documented consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux kernel Xe DRM client in 6.8 through 6.10.10 allows local users to crash the kernel via fdinfo access. The show_meminfo() path calls bo_meminfo() without holding the buffer-object lock, so concurrent TTM state changes trigger null-pointer dereferences or use-after-free access. Exploitation requires local Xe DRM access and a race during memory-state inspection; the bounded documented consequence is a kernel crash.

The record

CVE
CVE-2024-46866
Published
Sep 27, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=0845233388f8a26d00acf9bf230cfd4f36aa4c30 <94c4aa266111262c96c98f822d1bccc494786fee
  2. Affected versionversion=0845233388f8a26d00acf9bf230cfd4f36aa4c30 <abc8feacacf8fae10eecf6fea7865e8c1fee419c
  3. Affected versionversion=6.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0845233388f8a26d00acf9bf230cfd4f36aa4c30 <94c4aa266111262c96c98f822d1bccc494786fee; version=0845233388f8a26d00acf9bf230cfd4f36aa4c30 <abc8feacacf8fae10eecf6fea7865e8c1fee419c; version=6.8

Published CVSS scores

5.5NIST NVDCVSS: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-667Improper Locking
T1499Endpoint Denial of Service

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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