Home/CVE/An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This
CVE

CVE-2021-4204

An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This

An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.

HIGH · CVSS 7.1 EPSS 0.00767
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-20Improper Input Validation
▤

Affected Products & Versions

9
linux kernel< 5.8.0
linux kernelall versions
debian linuxall versions
redhat enterprise linuxall versions
netapp h300s firmwareall versions
netapp h500s firmwareall versions
netapp h700s firmwareall versions
netapp h410s firmwareall versions
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Aug 2022 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
⚑

Vendor Advisories

10
rhsaRHSA-2024:3138Moderate
rhsaRHSA-2024:0724Low
rhsaRHSA-2024:10262Moderate
suse-csafSUSE-SU-2024:3483-1
rhsaRHSA-2024:2950Moderate
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2021-4204MitigationThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2039178Issue TrackingThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-4204Third Party Advisory
https://security.netapp.com/advisory/ntap-20221228-0003/Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/01/11/4Mailing ListPatchThird Party Advisory
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