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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
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CVE-2021-33033 Detail

Description

The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14 Mailing List  Patch  Vendor Advisory 
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7 Mailing List  Patch  Vendor Advisory 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8 Mailing List  Patch  Vendor Advisory 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08 Mailing List  Patch  Vendor Advisory 
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt Exploit  Third Party Advisory 
https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e Exploit  Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-33033
NVD Published Date:
05/14/2021
NVD Last Modified:
06/09/2021
Source:
MITRE