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

fs/sysv: Null check to prevent null-ptr-deref bug

sb_getblk(inode->i_sb, parent) return a null ptr and taking lock on
that leads to the null-ptr-deref bug.

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
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< e976988bc245ec3768cc0f76bed7d05488a7dd0f
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< baa60c66a310c50785289b0ede6fdce8ec3219c7
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< 0a44ceba77c3267f8505dda102a59367dc24caee
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< 7f740bc696d4617f8ee44565e8ac0d36278a1e91
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< afd9a31b5aa4b3747f382d44a7b03b7b5d0b7635
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< 1416eebaad80bdc85ad9f97f27242011b031e2a9
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< e28f376dd8dfcc4e880ac101184132bc08703f6e
e5657933863f43cc6bb76a54d659303dafaa9e58 affected
< ea2b62f305893992156a798f665847e0663c9f41
Linux Linux affected
Version Status Constraints
2.6.19 affected
—
0 unaffected
< 2.6.19
4.14.322 unaffected
≤ 4.14.*
4.19.291 unaffected
≤ 4.19.*
5.4.253 unaffected
≤ 5.4.*
5.10.190 unaffected
≤ 5.10.*
5.15.126 unaffected
≤ 5.15.*
6.1.45 unaffected
≤ 6.1.*
6.4.10 unaffected
≤ 6.4.*
6.5 unaffected
≤ *

No data.

No data.

No data.

Subscriptions

Vendors Products
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Tracking

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0a44ceba77c3267f8505dda102a59367dc24caee cve-icon cve-icon
https://git.kernel.org/stable/c/1416eebaad80bdc85ad9f97f27242011b031e2a9 cve-icon cve-icon
https://git.kernel.org/stable/c/7f740bc696d4617f8ee44565e8ac0d36278a1e91 cve-icon cve-icon
https://git.kernel.org/stable/c/afd9a31b5aa4b3747f382d44a7b03b7b5d0b7635 cve-icon cve-icon
https://git.kernel.org/stable/c/baa60c66a310c50785289b0ede6fdce8ec3219c7 cve-icon cve-icon
https://git.kernel.org/stable/c/e28f376dd8dfcc4e880ac101184132bc08703f6e cve-icon cve-icon
https://git.kernel.org/stable/c/e976988bc245ec3768cc0f76bed7d05488a7dd0f cve-icon cve-icon
https://git.kernel.org/stable/c/ea2b62f305893992156a798f665847e0663c9f41 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025123058-CVE-2023-54264-64bd@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-54264 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-54264 cve-icon
History

Thu, 01 Jan 2026 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

Tue, 30 Dec 2025 12:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: fs/sysv: Null check to prevent null-ptr-deref bug sb_getblk(inode->i_sb, parent) return a null ptr and taking lock on that leads to the null-ptr-deref bug.
Title fs/sysv: Null check to prevent null-ptr-deref bug
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-01-05T11:37:10.408Z

Reserved: 2025-12-30T12:06:44.517Z

Link: CVE-2023-54264

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-30T13:16:15.193

Modified: 2025-12-31T20:42:43.210

Link: CVE-2023-54264

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-30T00:00:00Z

Links: CVE-2023-54264 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.