Linux Kernel up to 6.12.1 SUNRPC xs_tcp_set_socket_timeouts null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.12.1 and classified as critical. The affected element is the function xs_tcp_set_socket_timeouts of the component SUNRPC. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2024-56688. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.1. It has been rated as critical. This issue affects the function xs_tcp_set_socket_timeouts of the component SUNRPC. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport Since transport->sock has been set to NULL during reset transport, XPRT_SOCK_UPD_TIMEOUT also needs to be cleared. Otherwise, the xs_tcp_set_socket_timeouts() may be triggered in xs_tcp_send_request() to dereference the transport->sock that has been set to NULL.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2024-56688 since 12/27/2024. 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 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 cc91d59d34ff6a6fee1c0b48612081a451e05e9a/86a1f9fa24804cd7f9d7dd3f24af84fc7f8ec02e/fe6cbf0b2ac3cf4e21824a44eaa336564ed5e960/87a95ee34a48dfad198a2002e4966e1d63d53f2b/3811172e8c98ceebd12fe526ca6cb37a1263c964/638a8fa5a7e641f9401346c57e236f02379a0c40/66d11ca91bf5100ae2e6b5efad97e58d8448843a/4db9ad82a6c823094da27de4825af693a3475d51 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-2025-2855). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • IBM DataPower Gateway
  • Dell PowerScale OneFS

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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: No
Local: No
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 5.4.287/5.10.231/5.15.174/6.1.120/6.6.64/6.11.11/6.12.2
Patch: cc91d59d34ff6a6fee1c0b48612081a451e05e9a/86a1f9fa24804cd7f9d7dd3f24af84fc7f8ec02e/fe6cbf0b2ac3cf4e21824a44eaa336564ed5e960/87a95ee34a48dfad198a2002e4966e1d63d53f2b/3811172e8c98ceebd12fe526ca6cb37a1263c964/638a8fa5a7e641f9401346c57e236f02379a0c40/66d11ca91bf5100ae2e6b5efad97e58d8448843a/4db9ad82a6c823094da27de4825af693a3475d51

Timelineinfo

12/27/2024 🔍
12/28/2024 +1 days 🔍
12/28/2024 +0 days 🔍
01/17/2026 +385 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-56688 (🔍)
GCVE (CVE): GCVE-0-2024-56688
GCVE (VulDB): GCVE-100-289691
CERT Bund: WID-SEC-2025-2855 - IBM DataPower Gateway: Mehrere Schwachstellen

Entryinfo

Created: 12/28/2024 12:49
Updated: 01/17/2026 02:40
Changes: 12/28/2024 12:49 (59), 02/13/2025 13:36 (2), 01/17/2026 02:40 (7)
Complete: 🔍
Cache ID: 216::103

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