Linux Kernel up to 6.4.3 md_bitmap_checkpage return value

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.4.3. This issue affects the function md_bitmap_checkpage. Executing a manipulation can lead to return value. The identification of this vulnerability is CVE-2023-53357. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.4.3 and classified as critical. This vulnerability affects the function md_bitmap_checkpage. The manipulation with an unknown input leads to a return value vulnerability. The CWE definition for the vulnerability is CWE-252. The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: md/raid10: check slab-out-of-bounds in md_bitmap_get_counter If we write a large number to md/bitmap_set_bits, md_bitmap_checkpage() will return -EINVAL because 'page >= bitmap->pages', but the return value was not checked immediately in md_bitmap_get_counter() in order to set *blocks value and slab-out-of-bounds occurs. Move check of 'page >= bitmap->pages' to md_bitmap_get_counter() and return directly if true.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2023-53357 since 09/16/2025. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 12/27/2025).

The vulnerability scanner Nessus provides a plugin with the ID 265615 (Linux Distros Unpatched Vulnerability : CVE-2023-53357), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.39, 6.3.13 or 6.4.4 eliminates this vulnerability. Applying the patch 374fb914304d9b500721007f3837ea8f1f9a2418/b0b971fe7d61411ede63c3291764dbde1577ef2c/39fa14e824acfd470db4f42c354297456bd82b53/a134dd582c0d5b6068efa308bd485cf1d00b3f65/be1a3ec63a840cc9e59a033acf154f56255699a1/152bb26796ff054af50b2ee1b3ca56e364e4f61b/bea301c046110bf421a3ce153fb868cb8d618e90/301867b1c16805aebbc306aafa6ecdc68b73c7e5 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265615) and CERT Bund (WID-SEC-2025-2087). Once again VulDB remains the best source for vulnerability data.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Return value
CWE: CWE-252 / CWE-253
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265615
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53357

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.19.291/5.4.251/5.10.188/5.15.121/6.1.39/6.3.13/6.4.4
Patch: 374fb914304d9b500721007f3837ea8f1f9a2418/b0b971fe7d61411ede63c3291764dbde1577ef2c/39fa14e824acfd470db4f42c354297456bd82b53/a134dd582c0d5b6068efa308bd485cf1d00b3f65/be1a3ec63a840cc9e59a033acf154f56255699a1/152bb26796ff054af50b2ee1b3ca56e364e4f61b/bea301c046110bf421a3ce153fb868cb8d618e90/301867b1c16805aebbc306aafa6ecdc68b73c7e5

Timelineinfo

09/16/2025 CVE reserved
09/17/2025 +1 days Advisory disclosed
09/17/2025 +0 days VulDB entry created
12/27/2025 +101 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53357 (🔒)
GCVE (CVE): GCVE-0-2023-53357
GCVE (VulDB): GCVE-100-324724
CERT Bund: WID-SEC-2025-2087 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/17/2025 18:07
Updated: 12/27/2025 04:13
Changes: 09/17/2025 18:07 (58), 09/21/2025 21:17 (2), 12/11/2025 18:20 (11), 12/27/2025 04:13 (7)
Complete: 🔍
Cache ID: 216::103

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