NULL Pointer Dereference in GNU C Library Affects Glibc Products
CVE-2021-38604

7.5HIGH

Key Information:

Vendor
Gnu
Status
Glibc
Vendor
CVE Published:
12 August 2021

Summary

A vulnerability in the GNU C Library (glibc), specifically in the 'librt' component, stems from improper handling of certain NOTIFY_REMOVED data within the mq_notify function. This issue can lead to a NULL pointer dereference, potentially enabling attackers to exploit the flaw. The vulnerability was introduced as a byproduct of a previous security fix (CVE-2021-33574), and affects multiple systems using glibc versions up to 2.34, leading to stability and security concerns.

References

https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=b8...
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https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=4c...
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https://sourceware.org/bugzilla/show_bug.cgi?id=28213
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.