CVE-2021-43267

CRITICAL
Published Nov 2, 20214y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Nov 2, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-1284

Affected Products 18

VendorProductVersionRange
linuxlinux_kernel*≥5.10  –  <5.10.77
linuxlinux_kernel*≥5.11  –  <5.14.16
fedoraprojectfedora34any
fedoraprojectfedora35any
netapph300s_firmware*any
netapph300s*any
netapph500s_firmware*any
netapph500s*any
netapph700s_firmware*any
netapph700s*any
netapph300e_firmware*any
netapph300e*any
netapph500e_firmware*any
netapph500e*any
netapph700e_firmware*any
netapph700e*any
netapph410s_firmware*any
netapph410s*any

References 6

  • openwall.com http://www.openwall.com/lists/oss-security/2022/02/10/1
    ExploitMailing ListThird Party Advisory
  • cdn.kernel.org https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.16
    Mailing ListRelease NotesVendor Advisory
  • github.com https://github.com/torvalds/linux/commit/fa40d9734a57bcbfa79a280189799f76c88f7bb0
    PatchThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVWL7HZV5T5OEKJPO2D67RMFMKBBXGGB/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/
  • security.netapp.com https://security.netapp.com/advisory/ntap-20211125-0002/
    Third Party Advisory

Remediation

  • github.com https://github.com/torvalds/linux/commit/fa40d9734a57bcbfa79a280189799f76c88f7bb0
    PatchThird Party Advisory