What is CVE-2023-53222?

CVE-2023-53222 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 2.6.12 onward and patched in 4.14.322, 4.19.291, 5.4.251 and others. CVE-2023-53222 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53222?

CVE-2023-53222 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2023-53222?

Yes, CVE-2023-53222 has been patched. Fixed versions include 4.14.322, 4.19.291, 5.4.251 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53222 actively exploited?

CVE-2023-53222 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2023-53222

High

In the Linux kernel, the following vulnerability has been resolved: jfs: jfs_dmap: Validate db_l2nbperpage while mounting In jfs_dmap.c at line 381, BLKTODMAP is used to get a logical block number inside dbFree(). db_l2nbperpage, which is the log2 number of blocks per page, is passed as an argument to BLKTODMAP which uses it for shifting. Syzbot reported a shift out-of-bounds crash because db_l2nbperpage is too big. This happens because the large value is set without any validation in dbMount() at line 181. Thus, make sure that db_l2nbperpage is correct while mounting. Max number of blocks per page = Page size / Min block size => log2(Max num_block per page) = log2(Page size / Min block size) = log2(Page size) - log2(Min block size) => Max db_l2nbperpage = L2PSIZE - L2MINBLOCKSIZE

Package Linux Kernel

Published 2025-09-15

Last modified 2026-01-14

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2023-53222 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.40, 6.4.5, 6.5 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 4.14.322 4.14.x ✓ 4.19.291 4.19.x ✓ 5.4.251 5.4.x ✓ 5.10.188 5.10.x ✓ 5.15.121 5.15.x ✓ 6.1.40 6.1.x ✓ 6.4.5 6.4.x ✓ 6.5

References

8 total

Kernel Git
https://git.kernel.org/stable/c/11509910c599cbd04585ec35a6d5e1a0053d84c1

Patch
Kernel Git
https://git.kernel.org/stable/c/2a03c4e683d33d17b667418eb717b13dda1fac6b

Patch
Kernel Git
https://git.kernel.org/stable/c/47b7eaae08e8b2f25bdf37bc14d21be090bcb20f

Patch
Kernel Git
https://git.kernel.org/stable/c/8c1efe3f74a7864461b0dff281c5562154b4aa8e

Patch
Kernel Git
https://git.kernel.org/stable/c/a4855aeb13e4ad1f23e16753b68212e180f7d848

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2023-53222

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2025-09-15

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53222?

CVE-2023-53222 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 2.6.12 onward and has been patched in 4.14.322, 4.19.291, 5.4.251 and others. CVE-2023-53222 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53222?

CVE-2023-53222 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2023-53222?

Yes. CVE-2023-53222 has been patched. Fixed versions include 4.14.322, 4.19.291, 5.4.251 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53222 actively exploited?

No. CVE-2023-53222 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.