01 Record

CVE-2023-53391

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

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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02 Description

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

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.3% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-09-18 13:33Z11 MO AGO

Last updated

2026-05-11 19:44Z3 MO AGO

Reserved

2025-09-17

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-772Missing Release of Resource after Effective LifetimeBase

Data version

5.2

Document digest

c83c6ed6f0a0658f85f9c9fe643afa018f986eb39ecb6b885e774433d3d60df2

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxc3b1b1cbf002e65a3cabd479e68b5f35886a26db to < 5fada375113767b3b57f1b04f7a4fe64ffaa626f, c3b1b1cbf002e65a3cabd479e68b5f35886a26db to < 487f229efea80c00dd7397547ec4f25fb8999d99, c3b1b1cbf002e65a3cabd479e68b5f35886a26db to < 1f34bf8b442c6d720e7fa6f15e8702427e48aea9, c3b1b1cbf002e65a3cabd479e68b5f35886a26db to < ebe07db840992a3886694ac3d303b06f4b70ce00, c3b1b1cbf002e65a3cabd479e68b5f35886a26db to < 36ce9d76b0a93bae799e27e4f5ac35478c676592, 2.6.30—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/5fada375113767b3b57f1b04f7a4fe64ffaa626f
git.kernel.orghttps://git.kernel.org/stable/c/487f229efea80c00dd7397547ec4f25fb8999d99
git.kernel.orghttps://git.kernel.org/stable/c/1f34bf8b442c6d720e7fa6f15e8702427e48aea9
git.kernel.orghttps://git.kernel.org/stable/c/ebe07db840992a3886694ac3d303b06f4b70ce00
git.kernel.orghttps://git.kernel.org/stable/c/36ce9d76b0a93bae799e27e4f5ac35478c676592

01 Record index

CVE-2023-53391

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-53391

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References