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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-33909 Detail

Description

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.


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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URL Source(s) Tag(s)
http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html CVE, MITRE Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html CVE, MITRE Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html CVE, MITRE Third Party Advisory  VDB Entry 
http://www.openwall.com/lists/oss-security/2021/07/22/7 CVE, MITRE Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/08/25/10 CVE, MITRE Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/09/17/2 CVE, MITRE Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/09/17/4 CVE, MITRE Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/09/21/1 CVE, MITRE Mailing List  Third Party Advisory 
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 CVE, MITRE Mailing List  Patch  Vendor Advisory 
https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b CVE, MITRE Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html CVE, MITRE Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html CVE, MITRE Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html CVE, MITRE Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ CVE, MITRE
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 CVE, MITRE Third Party Advisory 
https://security.netapp.com/advisory/ntap-20210819-0004/ CVE, MITRE Third Party Advisory 
https://www.debian.org/security/2021/dsa-4941 CVE, MITRE Third Party Advisory 
https://www.openwall.com/lists/oss-security/2021/07/20/1 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
https://www.oracle.com/security-alerts/cpujan2022.html CVE, MITRE Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound cwe source acceptance level NIST  
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

23 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-33909
NVD Published Date:
07/20/2021
NVD Last Modified:
11/21/2024
Source:
MITRE