CVE-2024-27045

Kernel memory corruption via oversized debugfs formatting

Published May 1, 2024 · Updated Aug 5, 2026

Buffer overflow in the AMD display debugfs handler in Linux allows local users to overwrite kernel memory through a debugfs read. The dp_dsc_clock_en_read() handler gives snprintf() a 30-byte limit for a 10-byte stack buffer while formatting dsc_state.dsc_clock_en. The node is reachable only through the local VFS, and overflow requires at least 10 characters even though the hardware register is one bit and outside attacker control.

CVSS severity7.0
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the AMD display debugfs handler in Linux allows local users to overwrite kernel memory through a debugfs read. The dp_dsc_clock_en_read() handler gives snprintf() a 30-byte limit for a 10-byte stack buffer while formatting dsc_state.dsc_clock_en. The node is reachable only through the local VFS, and overflow requires at least 10 characters even though the hardware register is one bit and outside attacker control.

The record

CVE
CVE-2024-27045
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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

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=5.9
  2. Affected versionversion=c06e09b76639657f284bfaf1cce29557a2515e85 <440f059837418fac1695b65d3ebc6080d33be877
  3. Affected versionversion=c06e09b76639657f284bfaf1cce29557a2515e85 <4b09715f1504f1b6e8dff0e9643630610bc05141
  4. Affected versionversion=c06e09b76639657f284bfaf1cce29557a2515e85 <ad76fd30557d6a106c481e4606a981221ca525f7
  5. Affected versionversion=c06e09b76639657f284bfaf1cce29557a2515e85 <cf114d8d4a8d78df272116a745bb43b48cef65f4
  6. Affected versionversion=c06e09b76639657f284bfaf1cce29557a2515e85 <d346b3e5b25c95d504478507eb867cd3818775ab
  7. Affected versionversion=c06e09b76639657f284bfaf1cce29557a2515e85 <eb9327af3621d26b1d83f767c97a3fe8191a3a65
  8. Affected versionversion=c06e09b76639657f284bfaf1cce29557a2515e85 <ff28893c96c5e0927a4da10cd24a3522ca663515

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=c06e09b76639657f284bfaf1cce29557a2515e85 <440f059837418fac1695b65d3ebc6080d33be877; version=c06e09b76639657f284bfaf1cce29557a2515e85 <4b09715f1504f1b6e8dff0e9643630610bc05141; version=c06e09b76639657f284bfaf1cce29557a2515e85 <ad76fd30557d6a106c481e4606a981221ca525f7; version=c06e09b76639657f284bfaf1cce29557a2515e85 <cf114d8d4a8d78df272116a745bb43b48cef65f4; version=c06e09b76639657f284bfaf1cce29557a2515e85 <d346b3e5b25c95d504478507eb867cd3818775ab; version=c06e09b76639657f284bfaf1cce29557a2515e85 <eb9327af3621d26b1d83f767c97a3fe8191a3a65; version=c06e09b76639657f284bfaf1cce29557a2515e85 <ff28893c96c5e0927a4da10cd24a3522ca663515

Published CVSS scores

7.0Linux CNACVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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