Linux Kernel up to 6.8.4 aio_complete 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 was found in Linux Kernel up to 6.8.4 and classified as critical. This vulnerability affects the function aio_complete. Such manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2024-35874. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.8.4 and classified as critical. Affected by this issue is the function aio_complete. 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: aio: Fix null ptr deref in aio_complete() wakeup list_del_init_careful() needs to be the last access to the wait queue entry - it effectively unlocks access. Previously, finish_wait() would see the empty list head and skip taking the lock, and then we'd return - but the completion path would still attempt to do the wakeup after the task_struct pointer had been overwritten.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2024-35874 since 05/17/2024. There are known technical details, but no exploit is available.

Upgrading to version 6.8.5 eliminates this vulnerability. Applying the patch 9678bcc6234d/caeb4b0a11b3 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

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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.8.5
Patch: 9678bcc6234d/caeb4b0a11b3

Timelineinfo

05/17/2024 🔍
05/19/2024 +2 days 🔍
05/19/2024 +0 days 🔍
12/30/2024 +225 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-35874 (🔍)
GCVE (CVE): GCVE-0-2024-35874
GCVE (VulDB): GCVE-100-265136

Entryinfo

Created: 05/19/2024 13:00
Updated: 12/30/2024 18:59
Changes: 05/19/2024 13:00 (57), 12/30/2024 18:59 (12)
Complete: 🔍
Cache ID: 216::103

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