CVE-2024-39475

Kernel fault via unchecked framebuffer validation error

Published Jul 5, 2024 · Updated May 23, 2026

Divide-by-zero in the Linux kernel savage framebuffer driver allows attackers to trigger a kernel fault during device probing. savagefb_probe ignores the error returned by savagefb_check_var and continues with a zero pixclock value, which reaches a division operation. The Savage framebuffer driver must probe mode data with pixclock set to zero; the public record does not identify an attacker-controlled path, required privileges, or impact beyond service interruption.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Divide-by-zero in the Linux kernel savage framebuffer driver allows attackers to trigger a kernel fault during device probing. savagefb_probe ignores the error returned by savagefb_check_var and continues with a zero pixclock value, which reaches a division operation. The Savage framebuffer driver must probe mode data with pixclock set to zero; the public record does not identify an attacker-controlled path, required privileges, or impact beyond service interruption.

The record

CVE
CVE-2024-39475
Published
Jul 5, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-369
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 5, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 <5f446859bfa46df0ffb34149499f48a2c2d8cd95
  2. Affected versionversion=04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 <6ad959b6703e2c4c5d7af03b4cfd5ff608036339
  3. Affected versionversion=070398d32c5f3ab0e890374904ad94551c76aec4 <edaa57480b876e8203b51df7c3d14a51ea6b09e3
  4. Affected versionversion=224453de8505aede1890f007be973925a3edf6a1 <be754cbd77eaf2932408a4e18532e4945274a5c7
  5. Affected versionversion=4.19.308 <4.19.316
  6. Affected versionversion=5.10.211 <5.10.219
  7. Affected versionversion=512ee6d6041e007ef5bf200c6e388e172a2c5b24 <32f92b0078ebf79dbe4827288e0acb50d89d3d5b
  8. Affected versionversion=5.15.150 <5.15.161
  9. Affected versionversion=5.4.270 <5.4.278
  10. Affected versionversion=6.1.80 <6.1.94
  11. Affected versionversion=6.6.19 <6.6.34
  12. Affected versionversion=6.7.7 <6.8
  13. Affected versionversion=6.8
  14. Affected versionversion=84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff <86435f39c18967cdd937d7a49ba539cdea7fb547
  15. Affected versionversion=8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 <4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089
  16. Affected versionversion=a9ca4e80d23474f90841251f4ac0d941fa337a01
  17. Affected versionversion=bc3c2e58d73b28b9a8789fca84778ee165a72d13 <b8385ff814ca4cb7e63789841e6ec2a14c73e1e8

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 <5f446859bfa46df0ffb34149499f48a2c2d8cd95; version=04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 <6ad959b6703e2c4c5d7af03b4cfd5ff608036339; version=070398d32c5f3ab0e890374904ad94551c76aec4 <edaa57480b876e8203b51df7c3d14a51ea6b09e3; version=224453de8505aede1890f007be973925a3edf6a1 <be754cbd77eaf2932408a4e18532e4945274a5c7; version=4.19.308 <4.19.316; version=5.10.211 <5.10.219; version=512ee6d6041e007ef5bf200c6e388e172a2c5b24 <32f92b0078ebf79dbe4827288e0acb50d89d3d5b; version=5.15.150 <5.15.161; version=5.4.270 <5.4.278; version=6.1.80 <6.1.94; version=6.6.19 <6.6.34; version=6.7.7 <6.8; version=6.8; version=84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff <86435f39c18967cdd937d7a49ba539cdea7fb547; version=8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 <4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089; version=a9ca4e80d23474f90841251f4ac0d941fa337a01; version=bc3c2e58d73b28b9a8789fca84778ee165a72d13 <b8385ff814ca4cb7e63789841e6ec2a14c73e1e8

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-369Divide By Zero

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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