GNU C Library up to 2.34 librt mq_notify.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU C Library up to 2.34. It has been rated as problematic. This affects an unknown function of the file sysdeps/unix/sysv/linux/mq_notify.c of the component librt. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2021-38604. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in GNU C Library up to 2.34 (Software Library). This affects an unknown function of the file sysdeps/unix/sysv/linux/mq_notify.c of the component librt. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability.

The weakness was published 08/12/2021. The advisory is shared at sourceware.org. This vulnerability is uniquely identified as CVE-2021-38604. Technical details are known, but no exploit is available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at sourceware.org.

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Productinfo

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Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: sourceware.org

Timelineinfo

08/12/2021 🔍
08/12/2021 +0 days 🔍
08/12/2021 +0 days 🔍
05/30/2025 +1387 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: sourceware.org
Status: Confirmed

CVE: CVE-2021-38604 (🔍)
GCVE (CVE): GCVE-0-2021-38604
GCVE (VulDB): GCVE-100-180705

Entryinfo

Created: 08/12/2021 22:38
Updated: 05/30/2025 22:09
Changes: 08/12/2021 22:38 (40), 08/17/2021 09:25 (2), 05/30/2025 22:09 (33)
Complete: 🔍
Cache ID: 216::103

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