CVE-2024-50048

Local kernel panic via uninitialized fbcon putcs

Published Oct 21, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux 5.19 and later allows local users to panic the kernel through framebuffer console ioctls. set_con2fb_map reuses an existing framebuffer mapping without calling set_blitting_type, leaving ops->putcs uninitialized before fbcon_putcs invokes it. Exploitation requires local access to framebuffer and virtual-terminal device nodes and interrupts the host by triggering a kernel panic.

CVSS severity5.5
Medium
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

NULL pointer dereference in Linux 5.19 and later allows local users to panic the kernel through framebuffer console ioctls. set_con2fb_map reuses an existing framebuffer mapping without calling set_blitting_type, leaving ops->putcs uninitialized before fbcon_putcs invokes it. Exploitation requires local access to framebuffer and virtual-terminal device nodes and interrupts the host by triggering a kernel panic.

The record

CVE
CVE-2024-50048
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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=b07db39584856e16814e2f065380e533a001535d <5b97eebcce1b4f3f07a71f635d6aa3af96c236e7
  3. Affected versionversion=b07db39584856e16814e2f065380e533a001535d <8266ae6eafdcd5a3136592445ff4038bbc7ee80e
  4. Affected versionversion=b07db39584856e16814e2f065380e533a001535d <e5c2dba62996a3a6eeb34bd248b90fc69c5a6a1b
  5. Affected versionversion=b07db39584856e16814e2f065380e533a001535d <f7fb5dda555344529ce584ff7a28b109528d2f1b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=b07db39584856e16814e2f065380e533a001535d <5b97eebcce1b4f3f07a71f635d6aa3af96c236e7; version=b07db39584856e16814e2f065380e533a001535d <8266ae6eafdcd5a3136592445ff4038bbc7ee80e; version=b07db39584856e16814e2f065380e533a001535d <e5c2dba62996a3a6eeb34bd248b90fc69c5a6a1b; version=b07db39584856e16814e2f065380e533a001535d <f7fb5dda555344529ce584ff7a28b109528d2f1b

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.

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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-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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