CVE-2021-20268

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Summary

CVECVE-2021-20268
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-09 18:15:00 UTC
Updated2023-11-07 03:29:00 UTC
DescriptionAn out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Risk And Classification

Problem Types: CWE-190

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Application Redhat Openshift Container Platform 4.4 All All All
Application Redhat Openshift Container Platform 4.5 All All All
Application Redhat Openshift Container Platform 4.6 All All All
Application Redhat Openshift Container Platform 4.7 All All All

References

ReferenceSourceLinkTags
1923816 – (CVE-2021-20268) CVE-2021-20268 kernel: eBPF Improper Input Validation MISC bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
CVE-2021-20268 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
[PATCH] bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc lore.kernel.org
[PATCH] bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc MISC lore.kernel.org Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 180162 Debian Security Update for linux (CVE-2021-20268)
  • 198326 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4910-1)
  • 610418 Google Pixel Android June 2022 Security Patch Missing
  • 610422 Google Android July 2022 Security Patch Missing for Huawei EMUI
  • 750650 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1975-1)
  • 750652 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1977-1)
  • 750762 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1977-1)
  • 750766 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1975-1)
  • 900098 CBL-Mariner Linux Security Update for kernel 5.4.91
  • 903038 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3987)
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