CVE-2024-44977

Kernel memory corruption via oversized TA binary

Published Sep 4, 2024 · Updated May 11, 2026

Out-of-bounds write in the Linux kernel AMDGPU driver allows local users to corrupt kernel memory through an oversized TA binary. The ta_if_load_debugfs_write handler accepted a user-supplied TA length without checking it against the one-megabyte PSP buffer before initialization copied the binary. Reachability requires writable access to the AMDGPU TA debugfs load interface and compatible AMDGPU PSP hardware; a successful write can compromise kernel confidentiality, integrity, and availability.

CVSS severity7.8
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Linux kernel AMDGPU driver allows local users to corrupt kernel memory through an oversized TA binary. The ta_if_load_debugfs_write handler accepted a user-supplied TA length without checking it against the one-megabyte PSP buffer before initialization copied the binary. Reachability requires writable access to the AMDGPU TA debugfs load interface and compatible AMDGPU PSP hardware; a successful write can compromise kernel confidentiality, integrity, and availability.

The record

CVE
CVE-2024-44977
Published
Sep 4, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.19
  2. Affected versionversion=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <50553ea7cbd3344fbf40afb065f6a2d38171c1ad
  3. Affected versionversion=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <5ab8793b9a6cc059f503cbe6fe596f80765e0f19
  4. Affected versionversion=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <c99769bceab4ecb6a067b9af11f9db281eea3e2a
  5. Affected versionversion=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <e562415248f402203e7fb6d8c38c1b32fa99220f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <50553ea7cbd3344fbf40afb065f6a2d38171c1ad; version=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <5ab8793b9a6cc059f503cbe6fe596f80765e0f19; version=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <c99769bceab4ecb6a067b9af11f9db281eea3e2a; version=e50d9ba0d2cd0cb4dd18e2a41a83fe21d3b046b8 <e562415248f402203e7fb6d8c38c1b32fa99220f

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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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-787Out-of-bounds Write
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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