CVE-2021-3640

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2021-3640
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-03-03 23:15:00 UTC
Updated2023-11-07 03:38:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-362

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 20.04 All All All
Operating System Canonical Ubuntu Linux 21.10 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 34 All All All
Application Linux Linux Kernel All All All All
Operating System Linux Linux Kernel All All All All
Hardware Netapp H300e - All All All
Operating System Netapp H300e Firmware - All All All
Hardware Netapp H300s - All All All
Operating System Netapp H300s Firmware - All All All
Hardware Netapp H410c - All All All
Operating System Netapp H410c Firmware - All All All
Hardware Netapp H410s - All All All
Operating System Netapp H410s Firmware - All All All
Hardware Netapp H500e - All All All
Operating System Netapp H500e Firmware - All All All
Hardware Netapp H500s - All All All
Operating System Netapp H500s Firmware - All All All
Hardware Netapp H700e - All All All
Operating System Netapp H700e Firmware - All All All
Hardware Netapp H700s - All All All
Operating System Netapp H700s Firmware - All All All

References

ReferenceSourceLinkTags
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
[SECURITY] [DLA 2941-1] linux-4.19 security update MLIST lists.debian.org
[SECURITY] [DLA 2940-1] linux security update MLIST lists.debian.org
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org
LKML: Takashi Iwai: [PATCH] Bluetooth: sco: Fix lock_sock() blockage by memcpy_from_msg() MISC lkml.org
CVE-2021-3640 | Ubuntu MISC ubuntu.com
1980646 – (CVE-2021-3640) CVE-2021-3640 kernel: use-after-free vulnerability in function sco_sock_sendmsg() MISC bugzilla.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
oss-security - CVE-2021-3640: Linux kernel: UAF in sco_send_frame function MISC www.openwall.com
February 2022 Linux Kernel 5.15.2 Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
Debian -- Security Information -- DSA-5096-1 linux DEBIAN www.debian.org
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
Bluetooth: sco: Fix lock_sock() blockage by memcpy_from_msg() · torvalds/linux@99c23da · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159641 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2022-9147)
  • 159642 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2022-9148)
  • 160210 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-7683)
  • 160270 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-8267)
  • 179117 Debian Security Update for linux (DSA 5096-1)
  • 179118 Debian Security Update for linux (DLA 2940-1)
  • 179119 Debian Security Update for linux-4.19 (DLA 2941-1)
  • 179745 Debian Security Update for linux (CVE-2021-3640)
  • 198653 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5265-1)
  • 198655 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5268-1)
  • 198656 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5267-1)
  • 198666 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5267-3)
  • 240815 Red Hat Update for kernel-rt (RHSA-2022:7444)
  • 240817 Red Hat Update for kernel security (RHSA-2022:7683)
  • 240869 Red Hat Update for kernel-rt (RHSA-2022:7933)
  • 240904 Red Hat Update for kernel security (RHSA-2022:8267)
  • 242890 Red Hat Update for kernel (RHSA-2024:0724)
  • 353079 Amazon Linux Security Advisory for kernel : ALAS2-2021-1727
  • 353141 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-010
  • 353152 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2022-008
  • 353242 Amazon Linux Security Advisory for kernel : ALAC2012-2022-036
  • 353243 Amazon Linux Security Advisory for kmod-mlx5 : ALAC2012-2022-037
  • 353244 Amazon Linux Security Advisory for kmod-sfc : ALAC2012-2022-038
  • 751137 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1271-1)
  • 751155 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3192-1)
  • 751160 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3179-1)
  • 751163 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3206-1)
  • 751170 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3205-1)
  • 751238 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 40 for SLE 12 SP3) (SUSE-SU-2021:3459-1)
  • 751437 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3876-1)
  • 751441 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3876-1)
  • 751451 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3935-1)
  • 751473 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3969-1)
  • 751476 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3972-1)
  • 900752 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8987)
  • 906157 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8987-1)
  • 940732 AlmaLinux Security Update for kernel (ALSA-2022:7683)
  • 940766 AlmaLinux Security Update for kernel-rt (ALSA-2022:7444)
  • 940798 AlmaLinux Security Update for kernel (ALSA-2022:8267)
  • 940843 AlmaLinux Security Update for kernel-rt (ALSA-2022:7933)
  • 960176 Rocky Linux Security Update for kernel-rt (RLSA-2022:7444)
  • 960184 Rocky Linux Security Update for kernel (RLSA-2022:7683)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report