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

shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs

As the ramfs-based tmpfs uses ramfs_init_fs_context() for the
init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb()
to free it and avoid a memory leak.

Metrics

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 0.00018.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux Subscribe
Linux Kernel Subscribe

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

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Vendors Products
Linux Subscribe
Linux Kernel Subscribe
Advisories
Source ID Title
EUVD EUVD EUVD-2025-29937 In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-based tmpfs uses ramfs_init_fs_context() for the init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb() to free it and avoid a memory leak.
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1f34bf8b442c6d720e7fa6f15e8702427e48aea9 cve-icon cve-icon
https://git.kernel.org/stable/c/36ce9d76b0a93bae799e27e4f5ac35478c676592 cve-icon cve-icon
https://git.kernel.org/stable/c/487f229efea80c00dd7397547ec4f25fb8999d99 cve-icon cve-icon
https://git.kernel.org/stable/c/5fada375113767b3b57f1b04f7a4fe64ffaa626f cve-icon cve-icon
https://git.kernel.org/stable/c/ebe07db840992a3886694ac3d303b06f4b70ce00 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025091858-CVE-2023-53391-cea3@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53391 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53391 cve-icon
History

Wed, 14 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 12 Dec 2025 19:45:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Fri, 19 Sep 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Fri, 19 Sep 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

Thu, 18 Sep 2025 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-based tmpfs uses ramfs_init_fs_context() for the init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb() to free it and avoid a memory leak.
Title shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-01-14T19:03:05.597Z

Reserved: 2025-09-17T14:54:09.737Z

Link: CVE-2023-53391

cve-icon Vulnrichment

Updated: 2026-01-14T18:59:06.182Z

cve-icon NVD

Status : Modified

Published: 2025-09-18T14:15:42.237

Modified: 2026-01-14T19:16:38.023

Link: CVE-2023-53391

cve-icon Redhat

Severity : Low

Publid Date: 2025-09-18T00:00:00Z

Links: CVE-2023-53391 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-09-19T09:36:38Z

Weaknesses