CVE-2021-44733

Published on: Not Yet Published

Last Modified on: 06/01/2022 06:54:00 PM UTC

CVE-2021-44733

Source: Mitre Source: NIST CVE.ORG Print: PDF PDF
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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

A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.

  • CVE-2021-44733 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7 - HIGH

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

CVSS2 Score: 4.4 - MEDIUM

Access
Vector ⓘ		 Access
Complexity		 Authentication
LOCAL MEDIUM NONE
Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags ⓘ Link
[SECURITY] [DLA 2941-1] linux-4.19 security update lists.debian.org
text/html
 URL Logo MLIST [debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update
kernel/git/torvalds/linux.git - Linux kernel source tree git.kernel.org
text/html
 URL Logo MISC git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c
[PATCH v2] tee: handle lookup of shm with reference count 0 - Jens Wiklander lore.kernel.org
text/html
 URL Logo MISC lore.kernel.org/lkml/[email protected]/
optee-qemu/README.md at main · pjlantz/optee-qemu · GitHub github.com
text/html
 URL Logo MISC github.com/pjlantz/optee-qemu/blob/main/README.md
Debian -- Security Information -- DSA-5096-1 linux www.debian.org
Depreciated Link
text/html
 URL Logo DEBIAN DSA-5096
January 2022 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security security.netapp.com
text/html
 URL Logo CONFIRM security.netapp.com/advisory/ntap-20220114-0003/
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Related QID Numbers

  • 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)
  • 159825 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-1988)
  • 179117 Debian Security Update for linux (DSA 5096-1)
  • 179119 Debian Security Update for linux-4.19 (DLA 2941-1)
  • 179523 Debian Security Update for linux (CVE-2021-44733)
  • 198659 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5278-1)
  • 198707 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5339-1)
  • 198708 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5337-1)
  • 198709 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5338-1)
  • 198731 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5368-1)
  • 198740 Ubuntu Security Notification for Linux kernel (BlueField) Vulnerabilities (USN-5377-1)
  • 240275 Red Hat Update for kernel-rt (RHSA-2022:1975)
  • 240298 Red Hat Update for kernel security (RHSA-2022:1988)
  • 353151 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2022-009
  • 353160 Amazon Linux Security Advisory for kernel : ALAS2-2022-1749
  • 376925 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2022:0125)
  • 610418 Google Pixel Android June 2022 Security Patch Missing
  • 671436 EulerOS Security Update for kernel (EulerOS-SA-2022-1352)
  • 671448 EulerOS Security Update for kernel (EulerOS-SA-2022-1450)
  • 671474 EulerOS Security Update for kernel (EulerOS-SA-2022-1429)
  • 671505 EulerOS Security Update for kernel (EulerOS-SA-2022-1489)
  • 671535 EulerOS Security Update for kernel (EulerOS-SA-2022-1508)
  • 751654 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0197-1)
  • 751695 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0367-1)
  • 751696 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0364-1)
  • 751697 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0366-1)
  • 751700 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2022:0363-1)
  • 751701 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2022:0366-1)
  • 751702 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0371-1)
  • 751703 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0372-1)
  • 751704 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2022:0370-1)
  • 752005 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0370-1)
  • 753194 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0288-1)
  • 753212 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0363-1)
  • 753462 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0289-1)
  • 900420 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (7060)
  • 901435 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (7063-1)
  • 905766 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (7060-1)
  • 940517 AlmaLinux Security Update for kernel (ALSA-2022:1988)

Exploit/POC from Github

Environment with vulnerable kernel for exploitiation of CVE-2021-44733

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System		DebianDebian Linux10.0AllAllAll
Operating
System		DebianDebian Linux11.0AllAllAll
Operating
System		DebianDebian Linux9.0AllAllAll
Operating
System		FedoraprojectFedora35AllAllAll
Operating
System		LinuxLinux KernelAllAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh300eAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh300sAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh410cAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh410sAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh500eAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh500sAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh700eAllAllAll
Hardware Device InfoNetappBaseboard Management Controllerh700sAllAllAll
Operating
System		NetappBaseboard Management Controller Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H300e-AllAllAll
Operating
System		NetappBaseboard Management Controller H300e Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H300s-AllAllAll
Operating
System		NetappBaseboard Management Controller H300s Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H410c-AllAllAll
Operating
System		NetappBaseboard Management Controller H410c Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H410s-AllAllAll
Operating
System		NetappBaseboard Management Controller H410s Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H500e-AllAllAll
Operating
System		NetappBaseboard Management Controller H500e Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H500s-AllAllAll
Operating
System		NetappBaseboard Management Controller H500s Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H700e-AllAllAll
Operating
System		NetappBaseboard Management Controller H700e Firmware-AllAllAll
Hardware Device InfoNetappBaseboard Management Controller H700s-AllAllAll
Operating
System		NetappBaseboard Management Controller H700s Firmware-AllAllAll
Operating
System		RedhatEnterprise Linux8.0AllAllAll
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h300e:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h300s:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h410c:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h410s:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h500e:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h500s:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h700e:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller:h700s:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h300e:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h300e_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h300s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h300s_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h410c:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h410c_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h410s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h410s_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h500e:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h500e_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h500s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h500s_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h700e:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h700e_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:baseboard_management_controller_h700s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:baseboard_management_controller_h700s_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-44733 : A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the #Linux #kernel throug… twitter.com/i/web/status/1… 2021-12-22 17:05:14
Reddit Logo Icon /r/netcve CVE-2021-44733 2021-12-22 18:38:19
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