CVE-2024-49924

Local kernel code execution via uncanceled pxafb work

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux pxafb framebuffer driver allows local users to execute code in the kernel through local framebuffer ioctls. During removal, pxafb_remove unregisters and frees framebuffer state before canceling pxafb_task, so queued work dereferences the released pxafb_info object. DAC access to /dev/fbN permits work to be queued, but driver unbind or removal requires root; successful exploitation reads or writes kernel memory, while failure can crash the host.

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

Use-after-free in the Linux pxafb framebuffer driver allows local users to execute code in the kernel through local framebuffer ioctls. During removal, pxafb_remove unregisters and frees framebuffer state before canceling pxafb_task, so queued work dereferences the released pxafb_info object. DAC access to /dev/fbN permits work to be queued, but driver unbind or removal requires root; successful exploitation reads or writes kernel memory, while failure can crash the host.

The record

CVE
CVE-2024-49924
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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

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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=2.6.27
  2. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <3c0d416eb4bef705f699213cee94bf54b6acdacd
  3. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <4a6921095eb04a900e0000da83d9475eb958e61e
  4. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <4cda484e584be34d55ee17436ebf7ad11922b97a
  5. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <6d0a07f68b66269e167def6c0b90a219cd3e7473
  6. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <a3a855764dbacbdb1cc51e15dc588f2d21c93e0e
  7. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <aaadc0cb05c999ccd8898a03298b7e5c31509b08
  8. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd
  9. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <e6897e299f57b103e999e62010b88e363b3eebae
  10. Affected versionversion=9f17f2874834f4cdbe48cc05676d8f7558793204 <fdda354f60a576d52dcf90351254714681df4370

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.27; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <3c0d416eb4bef705f699213cee94bf54b6acdacd; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <4a6921095eb04a900e0000da83d9475eb958e61e; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <4cda484e584be34d55ee17436ebf7ad11922b97a; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <6d0a07f68b66269e167def6c0b90a219cd3e7473; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <a3a855764dbacbdb1cc51e15dc588f2d21c93e0e; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <aaadc0cb05c999ccd8898a03298b7e5c31509b08; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <e6897e299f57b103e999e62010b88e363b3eebae; version=9f17f2874834f4cdbe48cc05676d8f7558793204 <fdda354f60a576d52dcf90351254714681df4370

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/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-416Use After Free
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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