CVE-2021-4204

🗓️ 04 Oct 2026 16:56:52Reported by KitPloitType

kitploit🔗 kitploit.com👁 12 Views

Local privilege escalation in Linux kernel eBPF ring buffer corruption leading to root.

Reporter	Title	Published	Views	Family All 303
IBM Security Bulletins	Security Bulletin: IBM QRadar SIEM contains multiple kernel vulnerabilities	7 Jun 202415:32	–	ibm
IBM Security Bulletins	Security Bulletin: IBM Technical Suppport Appliance - possible security flaws or denial of service	26 Mar 202503:45	–	ibm
GithubExploit	Exploit for Improper Restriction of Operations within the Bounds of a Memory Buffer in Linux Linux_Kernel	24 Feb 202206:43	–	githubexploit
attackerkb	CVE-2021-4204	24 Aug 202216:15	–	attackerkb
Tenable Nessus	Alibaba Cloud Linux 3 : 0029: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0029)	14 May 202500:00	–	nessus
Tenable Nessus	Rocky Linux 8.6 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0865)	1 Oct 202600:00	–	nessus
Tenable Nessus	Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0626)	1 Oct 202600:00	–	nessus
Tenable Nessus	Rocky Linux 8 [CIQ] Security Update: kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc Multiple Vulnerabilities (crlsa-2024_2950)	1 Oct 202600:00	–	nessus
Tenable Nessus	Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crlsa-2024_3138)	1 Oct 202600:00	–	nessus
Tenable Nessus	Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crxsa-2024_3138)	1 Oct 202600:00	–	nessus

04 Oct 2026 16:56Current

7.2High risk

Vulners AI Score7.2

CVSS 3.17.1

EPSS0.01221

Linux kernel eBPF ring buffer privilege escalation cred overwrite