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VULNERABILITIES

CVE-2021-47244 Details

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: Fix out of bounds when parsing TCP options The TCP option parser in mptcp (mptcp_get_options) could read one byte out of bounds. When the length is 1, the execution flow gets into the loop, reads one byte of the opcode, and if the opcode is neither TCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds the length of 1. This fix is inspired by commit 9609dad263f8 ("ipv4: tcp_input: fix stack out of bounds when parsing TCP options.").

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:6.2 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/07718be265680dcf496347d475ce1a5442f55ad7 kernel.orgPatch
https://git.kernel.org/stable/c/73eeba71dc9932970befa009e68272a3d5ec4a58 kernel.orgPatch
https://git.kernel.org/stable/c/76e02b8905d0691e89e104a882f3bba7dd0f6037 kernel.orgPatch
https://git.kernel.org/stable/c/07718be265680dcf496347d475ce1a5442f55ad7 CVEPatch
https://git.kernel.org/stable/c/73eeba71dc9932970befa009e68272a3d5ec4a58 CVEPatch

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-125Out-of-bounds Read[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 5.6, < 5.10.46
>= 5.11, < 5.12.13
5.13 rc1
5.13 rc2
5.13 rc3

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-47244
NVD Published Date:
May 21, 2024
NVD Last Modified:
Aug 4, 2026
Source:
kernel.org
CVE-2021-47244 Details - Not Deferred