CVE-2021-38300

Published on: 09/20/2021 12:00:00 AM UTC

Last Modified on: 10/12/2021 01:15:00 AM UTC

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Certain versions of Linux Kernel from Linux contain the following vulnerability:

arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.

  • CVE-2021-38300 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7.8 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 7.2 - HIGH

Access
Vector
Access
Complexity
Authentication
LOCAL LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
COMPLETE COMPLETE COMPLETE

CVE References

Description Tags Link
CVE-2021-38300 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security security.netapp.com
text/html
URL Logo CONFIRM security.netapp.com/advisory/ntap-20211008-0003/
oss-security - [CVE-2021-38300] Linux kernel cBPF JIT compiler for MIPS emits incorrect branches leading to execution of arbitrary Kernel code www.openwall.com
text/html
URL Logo MISC www.openwall.com/lists/oss-security/2021/09/15/5
kernel/git/torvalds/linux.git - Linux kernel source tree git.kernel.org
text/html
URL Logo CONFIRM git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37cb28ec7d3a36a5bace7063a3dba633ab110f8b
cdn.kernel.org
text/plain
URL Logo CONFIRM cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10

Related QID Numbers

  • 352869 Amazon Linux Security Advisory for kernel: ALAS2-2021-1719

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
LinuxLinux KernelAllAllAllAll
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-38300 : arch/mips/net/bpf_jit.c in the #Linux #kernel through 5.14.6 can generate undesirable machine code… twitter.com/i/web/status/1… 2021-09-20 06:08:33
Twitter Icon @SecRiskRptSME RT: CVE-2021-38300 arch/mips/net/bpf_jit.c in the Linux kernel through 5.14.6 can generate undesirable machine cod… twitter.com/i/web/status/1… 2021-09-20 07:33:03
© CVE.report 2021 Twitter Nitter Twitter Viewer |

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