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CVE-2021-20320 Details

Description

A flaw was found in s390 eBPF JIT in bpf_jit_insn in arch/s390/net/bpf_jit_comp.c in the Linux kernel. In this flaw, a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=2010090 CVEIssue TrackingThird Party Advisory
https://lore.kernel.org/bpf/20210902185229.1840281-1-johan.almbladh%40anyfinetworks.com/ CVE
https://bugzilla.redhat.com/show_bug.cgi?id=2010090 [email protected]Issue TrackingThird Party Advisory
https://lore.kernel.org/bpf/20210902185229.1840281-1-johan.almbladh%40anyfinetworks.com/ [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-OtherWeakness Not in a Standard CWE Category[email protected]
CWE-200Exposure of Sensitive Information to an Unauthorized Actor[email protected]

Affected Products

ProductVersions
linux linux kernel
< 5.15
5.15 -
5.15 rc1
5.15 rc2

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*

Remediation

  • No remediation found in references.
fedoraproject fedora
34

CPE

  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
redhat enterprise linux
7.0
8.0

CPE

  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-20320
NVD Published Date:
Feb 18, 2022
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-20320 Details - Not Deferred