In the Linux kernel, the following vulnerability has been resolved:

ubi: Fix possible null-ptr-deref in ubi_free_volume()

It willl cause null-ptr-deref in the following case:

uif_init()
ubi_add_volume()
cdev_add() -> if it fails, call kill_volumes()
device_register()

kill_volumes() -> if ubi_add_volume() fails call this function
ubi_free_volume()
cdev_del()
device_unregister() -> trying to delete a not added device,
it causes null-ptr-deref

So in ubi_free_volume(), it delete devices whether they are added
or not, it will causes null-ptr-deref.

Handle the error case whlie calling ubi_add_volume() to fix this
problem. If add volume fails, set the corresponding vol to null,
so it can not be accessed in kill_volumes() and release the
resource in ubi_add_volume() error path.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00036.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < 5558bcf1c58720ca6e9d6198d921cb3aa337f038
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < 45b2c5ca4d2edae70f19fdb086bd927840c4c309
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < 234c53e57424992e657e6f4acc00d3df0983176f
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < fcbc795abe7897da4b5d2a6ab5010e36774b00c2
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < 5ec4c8aca5a221756a9007deadfea92795319fee
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < 2ea7195b195009ecf0046e55361f393ba96d02db
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < 9eccdb0760cbcb4427b5303a83a3007de998af51
801c135ce73d5df1caf3eca35b66a10824ae0707 affected < c15859bfd326c10230f09cb48a17f8a35f190342
Linux Linux affected
Version Status Constraints
2.6.22 affected —
0 unaffected < 2.6.22
4.14.308 unaffected ≤ 4.14.*
4.19.276 unaffected ≤ 4.19.*
5.4.235 unaffected ≤ 5.4.*
5.10.173 unaffected ≤ 5.10.*
5.15.100 unaffected ≤ 5.15.*
6.1.18 unaffected ≤ 6.1.*
6.2.5 unaffected ≤ 6.2.*
6.3 unaffected ≤ *

No data.

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No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/234c53e57424992e657e6f4acc00d3df0983176f cve-icon cve-icon
https://git.kernel.org/stable/c/2ea7195b195009ecf0046e55361f393ba96d02db cve-icon cve-icon
https://git.kernel.org/stable/c/45b2c5ca4d2edae70f19fdb086bd927840c4c309 cve-icon cve-icon
https://git.kernel.org/stable/c/5558bcf1c58720ca6e9d6198d921cb3aa337f038 cve-icon cve-icon
https://git.kernel.org/stable/c/5ec4c8aca5a221756a9007deadfea92795319fee cve-icon cve-icon
https://git.kernel.org/stable/c/9eccdb0760cbcb4427b5303a83a3007de998af51 cve-icon cve-icon
https://git.kernel.org/stable/c/c15859bfd326c10230f09cb48a17f8a35f190342 cve-icon cve-icon
https://git.kernel.org/stable/c/fcbc795abe7897da4b5d2a6ab5010e36774b00c2 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025122405-CVE-2023-54087-38fe@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-54087 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-54087 cve-icon
History

Thu, 25 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 24 Dec 2025 13:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ubi: Fix possible null-ptr-deref in ubi_free_volume() It willl cause null-ptr-deref in the following case: uif_init() ubi_add_volume() cdev_add() -> if it fails, call kill_volumes() device_register() kill_volumes() -> if ubi_add_volume() fails call this function ubi_free_volume() cdev_del() device_unregister() -> trying to delete a not added device, it causes null-ptr-deref So in ubi_free_volume(), it delete devices whether they are added or not, it will causes null-ptr-deref. Handle the error case whlie calling ubi_add_volume() to fix this problem. If add volume fails, set the corresponding vol to null, so it can not be accessed in kill_volumes() and release the resource in ubi_add_volume() error path.
Title ubi: Fix possible null-ptr-deref in ubi_free_volume()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-24T13:06:17.555Z

Reserved: 2025-12-24T13:02:52.515Z

Link: CVE-2023-54087

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-24T13:16:10.557

Modified: 2025-12-29T15:58:34.503

Link: CVE-2023-54087

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-24T00:00:00Z

Links: CVE-2023-54087 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.