Linux Kernel up to 5.10.219/5.15.153/6.1.23/6.2.10 nfsd op_release double free

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.10.219/5.15.153/6.1.23/6.2.10. It has been declared as critical. This impacts the function op_release of the component nfsd. The manipulation results in double free. This vulnerability is identified as CVE-2023-53241. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.10.219/5.15.153/6.1.23/6.2.10. Affected is the function op_release of the component nfsd. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: nfsd: call op_release, even when op_func returns an error For ops with "trivial" replies, nfsd4_encode_operation will shortcut most of the encoding work and skip to just marshalling up the status. One of the things it skips is calling op_release. This could cause a memory leak in the layoutget codepath if there is an error at an inopportune time. Have the compound processing engine always call op_release, even when op_func sets an error in op->status. With this change, we also need nfsd4_block_get_device_info_scsi to set the gd_device pointer to NULL on error to avoid a double free.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2023-53241 since 09/15/2025. 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 01/11/2026).

The vulnerability scanner Nessus provides a plugin with the ID 266184 (Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2025-106 (ALASKERNEL-5.10-2025-106)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.220, 5.15.154, 6.1.24 or 6.2.11 eliminates this vulnerability. Applying the patch 65a33135e91e6dd661ecdf1194b9d90c49ae3570/b11d8162c24af4a351d21e2c804d25ca493305e3/b623a8e5d38a69a3ef8644acb1030dd7c7bc28b3/3d0dcada384af22dec764c8374a2997870ec86ae/15a8b55dbb1ba154d82627547c5761cac884d810 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 (266184) and CERT Bund (WID-SEC-2025-2053). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Secure Connect Gateway
  • F5 F5OS

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
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: 266184
Nessus Name: Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2025-106 (ALASKERNEL-5.10-2025-106)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.220/5.15.154/6.1.24/6.2.11
Patch: 65a33135e91e6dd661ecdf1194b9d90c49ae3570/b11d8162c24af4a351d21e2c804d25ca493305e3/b623a8e5d38a69a3ef8644acb1030dd7c7bc28b3/3d0dcada384af22dec764c8374a2997870ec86ae/15a8b55dbb1ba154d82627547c5761cac884d810

Timelineinfo

09/15/2025 Advisory disclosed
09/15/2025 +0 days CVE reserved
09/15/2025 +0 days VulDB entry created
01/11/2026 +118 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53241 (🔒)
GCVE (CVE): GCVE-0-2023-53241
GCVE (VulDB): GCVE-100-324036
CERT Bund: WID-SEC-2025-2053 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/15/2025 17:04
Updated: 01/11/2026 02:55
Changes: 09/15/2025 17:04 (59), 09/30/2025 13:42 (2), 12/04/2025 00:50 (10), 12/29/2025 04:27 (7), 01/11/2026 02:55 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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