CVE-2024-53184

Kernel panic via unavailable UBD driver data

Published Dec 27, 2024 · Updated May 11, 2026

Linux contains a UBD device-release flaw that allows local users to trigger a User Mode Linux kernel panic by removing a block device. ubd_device_release() calls dev_get_drvdata() after the core has cleared the device's driver data, then passes the invalid UBD pointer to blk_mq_free_tag_set(). The path requires a running User Mode Linux instance with mconsole enabled and an idle removable UBD; the host kernel remains unaffected by a guest crash.

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

Linux contains a UBD device-release flaw that allows local users to trigger a User Mode Linux kernel panic by removing a block device. ubd_device_release() calls dev_get_drvdata() after the core has cleared the device's driver data, then passes the invalid UBD pointer to blk_mq_free_tag_set(). The path requires a running User Mode Linux instance with mconsole enabled and an idle removable UBD; the host kernel remains unaffected by a guest crash.

The record

CVE
CVE-2024-53184
Published
Dec 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 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=0998d0631001288a5974afc0b2a5f568bcdecb4d <16cf8511680809a9f20b3dd224c06d482648f9e2
  2. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <23d742a3fcd4781eed015a3a93e6a0e3ab1ef2a8
  3. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <2d194d951895df214e066d08146e77cb6e02c1d4
  4. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <300e277e463e6326938dd55ea560eafa0f5c88a5
  5. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <509ba8746f812e45a05034ba18b73db574693d11
  6. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <5727343348f34e11a7c5a2a944d5aa505731d876
  7. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <5bee35e5389f450a7eea7318deb9073e9414d3b1
  8. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <a5a75207efae4b558aaa34c288de7d6f2e926b4b
  9. Affected versionversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <e6e5a4cded9bef3a1b0a4fac815b7176eb9a18ec
  10. Affected versionversion=3.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0998d0631001288a5974afc0b2a5f568bcdecb4d <16cf8511680809a9f20b3dd224c06d482648f9e2; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <23d742a3fcd4781eed015a3a93e6a0e3ab1ef2a8; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <2d194d951895df214e066d08146e77cb6e02c1d4; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <300e277e463e6326938dd55ea560eafa0f5c88a5; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <509ba8746f812e45a05034ba18b73db574693d11; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <5727343348f34e11a7c5a2a944d5aa505731d876; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <5bee35e5389f450a7eea7318deb9073e9414d3b1; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <a5a75207efae4b558aaa34c288de7d6f2e926b4b; version=0998d0631001288a5974afc0b2a5f568bcdecb4d <e6e5a4cded9bef3a1b0a4fac815b7176eb9a18ec; version=3.6

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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

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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