Linux Kernel up to 6.11.1 lookup_atid null pointer dereference

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

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.11.1. This affects the function lookup_atid. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2024-47749. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.11.1. Affected by this vulnerability is the function lookup_atid. 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: RDMA/cxgb4: Added NULL check for lookup_atid The lookup_atid() function can return NULL if the ATID is invalid or does not exist in the identifier table, which could lead to dereferencing a null pointer without a check in the `act_establish()` and `act_open_rpl()` functions. Add a NULL check to prevent null pointer dereferencing. Found by Linux Verification Center (linuxtesting.org) with SVACE.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2024-47749 since 09/30/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 212935 (CBL Mariner 2.0 Security Update: kernel (CVE-2024-47749)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.227, 5.15.168, 6.1.113, 6.6.54, 6.10.13 or 6.11.2 eliminates this vulnerability. Applying the patch dd598ac57dca/b11318dc8a1e/39cb9f399135/0d50ae281a17/54aaa3ed4097/b9c94c8ba5a7/e766e6a92410 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 (212935) and CERT Bund (WID-SEC-2024-3251). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • NetApp StorageGRID
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Kyocera Printer
  • NetApp AFF
  • NetApp ActiveIQ Unified Manager
  • SUSE openSUSE
  • IBM Security Guardium
  • RESF Rocky Linux
  • Dell NetWorker
  • Dell Avamar
  • IBM QRadar SIEM
  • NetApp FAS
  • SolarWinds Security Event Manager
  • Dell PowerProtect Data Domain
  • Open Source Linux Kernel
  • 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: 5.6
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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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: 212935
Nessus Name: CBL Mariner 2.0 Security Update: kernel (CVE-2024-47749)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.10.227/5.15.168/6.1.113/6.6.54/6.10.13/6.11.2
Patch: dd598ac57dca/b11318dc8a1e/39cb9f399135/0d50ae281a17/54aaa3ed4097/b9c94c8ba5a7/e766e6a92410

Timelineinfo

09/30/2024 🔍
10/21/2024 +21 days 🔍
10/21/2024 +0 days 🔍
01/19/2026 +455 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-47749 (🔍)
GCVE (CVE): GCVE-0-2024-47749
GCVE (VulDB): GCVE-100-281107
CERT Bund: WID-SEC-2024-3251 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 10/21/2024 15:58
Updated: 01/19/2026 07:00
Changes: 10/21/2024 15:58 (58), 11/08/2024 21:16 (11), 12/14/2024 02:03 (2), 07/26/2025 02:47 (7), 10/05/2025 22:57 (1), 01/19/2026 07:00 (1)
Complete: 🔍
Cache ID: 216::103

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