CVE-2026-45976

Service interruption via leaked amdgpu RAS context

Published May 27, 2026 · Updated May 27, 2026

Memory leak in the Linux Kernel amdgpu RAS initialization path allows local users to interrupt service by exhausting kernel memory. On failure, amdgpu_ras_init() returns from amdgpu_nbio_ras_sw_init() without releasing its allocated con context. The path requires an AMD GPU with RAS initialization and a failing NBIO setup call; public records do not demonstrate repeatable triggering.

CVSS severity5.5
Medium
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

Memory leak in the Linux Kernel amdgpu RAS initialization path allows local users to interrupt service by exhausting kernel memory. On failure, amdgpu_ras_init() returns from amdgpu_nbio_ras_sw_init() without releasing its allocated con context. The path requires an AMD GPU with RAS initialization and a failing NBIO setup call; public records do not demonstrate repeatable triggering.

The record

CVE
CVE-2026-45976
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=6.4
  2. Affected versionversion=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <2fef8c2ac67e7c1b0409d23653300b134c63e54c
  3. Affected versionversion=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <3f43e7812b30d6b2e850218f9bb1dae60727fcef
  4. Affected versionversion=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <c11cd77a18115d2cd3f4b6915c4a537b6042f950
  5. Affected versionversion=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <ee41e5b63c8210525c936ee637a2c8d185ce873c
  6. Affected versionversion=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <f8a5426652bdadd4a5cb48326d48abbdfebe8153

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.4; version=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <2fef8c2ac67e7c1b0409d23653300b134c63e54c; version=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <3f43e7812b30d6b2e850218f9bb1dae60727fcef; version=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <c11cd77a18115d2cd3f4b6915c4a537b6042f950; version=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <ee41e5b63c8210525c936ee637a2c8d185ce873c; version=fdc94d3a8c887e4e06a7ff8dcb51d55cd70e16cf <f8a5426652bdadd4a5cb48326d48abbdfebe8153

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-401Missing Release of Memory after Effective Lifetime

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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