Linux Kernel up to 6.10.0 ext4.h memtostr_pad null termination

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.10.0. It has been declared as critical. This vulnerability affects the function memtostr_pad in the library ext4.h. Executing a manipulation can lead to null termination. This vulnerability appears as CVE-2024-42257. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.10.0. It has been declared as critical. This vulnerability affects the function memtostr_pad in the library ext4.h. The manipulation with an unknown input leads to a null termination vulnerability. The CWE definition for the vulnerability is CWE-170. The product does not terminate or incorrectly terminates a string or array with a null character or equivalent terminator. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ext4: use memtostr_pad() for s_volume_name As with the other strings in struct ext4_super_block, s_volume_name is not NUL terminated. The other strings were marked in commit 072ebb3bffe6 ("ext4: add nonstring annotations to ext4.h"). Using strscpy() isn't the right replacement for strncpy(); it should use memtostr_pad() instead.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2024-42257 since 07/30/2024. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/06/2024).

Upgrading to version 6.10.1 eliminates this vulnerability. Applying the patch 4378be89ddb7/be27cd64461c 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.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null termination
CWE: CWE-170 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.10.1
Patch: 4378be89ddb7/be27cd64461c

Timelineinfo

07/30/2024 🔍
08/08/2024 +9 days 🔍
08/08/2024 +0 days 🔍
09/06/2024 +29 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-42257 (🔍)
GCVE (CVE): GCVE-0-2024-42257
GCVE (VulDB): GCVE-100-273958

Entryinfo

Created: 08/08/2024 13:01
Updated: 09/06/2024 16:32
Changes: 08/08/2024 13:01 (58), 09/06/2024 16:32 (13)
Complete: 🔍
Cache ID: 216::103

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