CVE-2024-50076

Kernel-memory disclosure via uninitialized font buffer

Published Oct 29, 2024 · Updated May 11, 2026

Information disclosure in the Linux virtual terminal subsystem allows attackers to read uninitialized kernel memory via font retrieval. con_font_get allocates font.data without clearing the full maximum-sized buffer before a console driver callback can initialize only part of it. Access to the font-retrieval interface is required, and successful exploitation exposes residual kernel data without modifying system state.

CVSS severity6.5
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in the Linux virtual terminal subsystem allows attackers to read uninitialized kernel memory via font retrieval. con_font_get allocates font.data without clearing the full maximum-sized buffer before a console driver callback can initialize only part of it. Access to the font-retrieval interface is required, and successful exploitation exposes residual kernel data without modifying system state.

The record

CVE
CVE-2024-50076
Published
Oct 29, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-909
Attack vector
Unavailable
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 29, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1e5a17dc77d8a8bbe67040b32e2ef755901aba44
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <23c4cb8a56978e5b1baa171d42e616e316c2039d
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <adb1f312f38f0d2c928ceaff089262798cc260b4
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b3959d5eca136e0588f9af3867b34032160cb826
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dc2d5f02636c7587bdd6d1f60fc59c55860b00a4
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dc794e878e6d79f75205be456b1042a289c5759d
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <efc67cee700b89ffbdb74a0603a083ec1290ae31
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f956052e00de211b5c9ebaa1958366c23f82ee9e
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1e5a17dc77d8a8bbe67040b32e2ef755901aba44; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <23c4cb8a56978e5b1baa171d42e616e316c2039d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <adb1f312f38f0d2c928ceaff089262798cc260b4; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b3959d5eca136e0588f9af3867b34032160cb826; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dc2d5f02636c7587bdd6d1f60fc59c55860b00a4; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dc794e878e6d79f75205be456b1042a289c5759d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <efc67cee700b89ffbdb74a0603a083ec1290ae31; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f956052e00de211b5c9ebaa1958366c23f82ee9e; version=2.6.12

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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)
VectorUnavailable
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-909Missing Initialization of Resource

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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