Linux Kernel up to 6.12.1 NFSD nfsd4_process_cb_update null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.12.1. Impacted is the function nfsd4_process_cb_update of the component NFSD. This manipulation causes null pointer dereference. The identification of this vulnerability is CVE-2024-53217. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.12.1. Affected by this vulnerability is the function nfsd4_process_cb_update of the component NFSD. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent NULL dereference in nfsd4_process_cb_update() @ses is initialized to NULL. If __nfsd4_find_backchannel() finds no available backchannel session, setup_callback_client() will try to dereference @ses and segfault.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2024-53217 since 11/19/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 216224 (Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20100)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.325, 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.64, 6.11.11 or 6.12.2 eliminates this vulnerability. Applying the patch d9a0d1f6e15859ea7a86a327f28491e23deaaa62/cac1405e3ff6685a438e910ad719e0cf06af90ee/752a75811f27300fe8131b0a1efc91960f6f88e7/c5d90f9302742985a5078e42ac38de42c364c44a/0c3b0e326f838787d229314d4de83af9c53347e8/eb51733ae5fc73d95bd857d5da26f9f65b202a79/03178cd8f67227015debb700123987fe96275cd1/4a4ffc1aa9d618e41ad9151f40966e402e58a5a2/1e02c641c3a43c88cecc08402000418e15578d38 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 (216224) and CERT Bund (WID-SEC-2024-3762). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • RESF Rocky Linux
  • Dell NetWorker
  • Dell Avamar
  • Red Hat OpenShift
  • IBM QRadar SIEM
  • Dell PowerProtect Data Domain
  • Open Source Linux Kernel
  • IBM DataPower Gateway
  • 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: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
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: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 216224
Nessus Name: Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20100)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.325/5.4.287/5.10.231/5.15.174/6.1.120/6.6.64/6.11.11/6.12.2
Patch: d9a0d1f6e15859ea7a86a327f28491e23deaaa62/cac1405e3ff6685a438e910ad719e0cf06af90ee/752a75811f27300fe8131b0a1efc91960f6f88e7/c5d90f9302742985a5078e42ac38de42c364c44a/0c3b0e326f838787d229314d4de83af9c53347e8/eb51733ae5fc73d95bd857d5da26f9f65b202a79/03178cd8f67227015debb700123987fe96275cd1/4a4ffc1aa9d618e41ad9151f40966e402e58a5a2/1e02c641c3a43c88cecc08402000418e15578d38

Timelineinfo

11/19/2024 🔍
12/27/2024 +38 days 🔍
12/27/2024 +0 days 🔍
12/15/2025 +353 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-53217 (🔍)
GCVE (CVE): GCVE-0-2024-53217
GCVE (VulDB): GCVE-100-289459
CERT Bund: WID-SEC-2024-3762 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/27/2024 15:27
Updated: 12/15/2025 04:39
Changes: 12/27/2024 15:27 (59), 02/01/2025 00:35 (11), 02/13/2025 13:36 (2), 07/24/2025 01:54 (7), 10/14/2025 01:39 (1), 12/15/2025 04:39 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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