CVEvulnerability

CVE-2021-3640

7.0 HIGH Published 2022-03-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-03-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.9 MEDIUM — AV:L/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-362, CWE-416

Description

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.

Affected configurations

• linux linux kernel (< 4.4.293) • linux linux kernel (>= 4.5 < 4.9.291) • linux linux kernel (>= 4.10 < 4.14.256) • linux linux kernel (>= 4.15 < 4.19.218) • linux linux kernel (>= 4.20 < 5.4.160) • linux linux kernel (>= 5.5.0 < 5.10.80) • linux linux kernel (>= 5.11 < 5.14.19) • linux linux kernel (>= 5.15 < 5.15.3) • debian debian linux 9.0 • fedoraproject fedora 34 • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 20.04 • canonical ubuntu linux 21.10 • netapp h300s firmware • netapp h700s firmware • netapp h300e firmware • netapp h500e firmware • netapp h700e firmware • netapp h410s firmware • netapp h410c firmware • netapp h500s firmware

Related

Weakness · CWE (2)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
  • CWE-416 Use After Free weakness

References