Linux Kernel up to 6.6.17/6.7.5/6.8-rc4 kobject null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability was found in Linux Kernel up to 6.6.17/6.7.5/6.8-rc4 (Operating System) and classified as problematic. Affected by this issue is an unknown functionality of the component kobject. 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. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: Revert "kobject: Remove redundant checks for whether ktype is NULL" This reverts commit 1b28cb81dab7c1eedc6034206f4e8d644046ad31. It is reported to cause problems, so revert it for now until the root cause can be found.

The weakness was released 02/25/2024. The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2024-26604 since 02/19/2024. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/25/2024).

Upgrading to version 6.6.18, 6.7.6 or 6.8-rc5 eliminates this vulnerability. Applying the patch 7f414d306320/b746d52ce7bc/3ca8fbabcceb 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.

Entries connected to this vulnerability are available at VDB-265270, VDB-265271, VDB-265272 and VDB-265273.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔒
VulDB CVSS-BT Score: 🔒
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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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: 🔒

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.18/6.7.6/6.8-rc5
Patch: 7f414d306320/b746d52ce7bc/3ca8fbabcceb

Timelineinfo

02/19/2024 CVE reserved
02/25/2024 +6 days Advisory disclosed
02/25/2024 +0 days VulDB entry created
02/25/2024 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-26604 (🔒)
See also: 🔒

Entryinfo

Created: 02/25/2024 10:04
Changes: 02/25/2024 10:04 (43)
Complete: 🔍
Cache ID: 3:49B:103

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