CVE-2021-37159

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Summary

CVECVE-2021-37159
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-21 15:16:20 UTC
Updated2026-10-08 22:17:11 UTC
Descriptionhso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

Risk And Classification

Primary CVSS: v3.1 6.4 MEDIUM from [email protected]

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.003910000 probability, percentile 0.312680000 (date 2026-10-11)

Problem Types: CWE-415 | CWE-416 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.4MEDIUMCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary4.4AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:M/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Operating System Linux Linux Kernel All All All All
Application Oracle Communications Cloud Native Core Binding Support Function 22.1.3 All All All
Application Oracle Communications Cloud Native Core Network Exposure Function 22.1.1 All All All
Application Oracle Communications Cloud Native Core Policy 22.2.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
CVE-2021-37159 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
[SECURITY] [DLA 2785-1] linux-4.19 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
bugzilla.suse.com/show_bug.cgi af854a3a-2127-422b-91ae-364da2661108 bugzilla.suse.com
[PATCH v2] net: hso: do not call unregister if not registered — Linux USB af854a3a-2127-422b-91ae-364da2661108 www.spinics.net Mailing List, Patch, Third Party Advisory
Oracle Critical Patch Update Advisory - July 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
[SECURITY] [DLA 2843-1] linux security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159421 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9474)
  • 159422 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9475)
  • 159825 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-1988)
  • 178844 Debian Security Update for linux-4.19 (DLA 2785-1)
  • 178943 Debian Security Update for linux (DLA 2843-1)
  • 180364 Debian Security Update for linux (CVE-2021-37159)
  • 198515 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5092-1)
  • 198523 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5092-2)
  • 198524 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5096-1)
  • 198542 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5115-1)
  • 198585 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5164-1)
  • 198587 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5163-1)
  • 240275 Red Hat Update for kernel-rt (RHSA-2022:1975)
  • 240298 Red Hat Update for kernel security (RHSA-2022:1988)
  • 352869 Amazon Linux Security Advisory for kernel: ALAS2-2021-1719
  • 353156 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2022-004
  • 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
  • 356241 Amazon Linux Security Advisory for microvm-kernel : ALASMICROVM-KERNEL-4.14-2023-001
  • 610400 Google Pixel Android March 2022 Security Patch Missing
  • 610408 Google Android April 2022 Security Patch Missing for Huawei EMUI
  • 671134 EulerOS Security Update for kernel (EulerOS-SA-2021-2688)
  • 671135 EulerOS Security Update for kernel (EulerOS-SA-2021-2636)
  • 671137 EulerOS Security Update for kernel (EulerOS-SA-2021-2713)
  • 671181 EulerOS Security Update for kernel (EulerOS-SA-2021-2934)
  • 671703 EulerOS Security Update for kernel (EulerOS-SA-2022-1735)
  • 751353 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3675-1)
  • 751381 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3748-1)
  • 751399 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1501-1)
  • 751406 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3806-1)
  • 751424 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3848-1)
  • 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)
  • 900084 CBL-Mariner Linux Security Update for kernel 5.10.52.1
  • 900302 CBL-Mariner Linux Security Update for kernel 5.10.57.1
  • 900318 CBL-Mariner Linux Security Update for kernel 5.10.60.1
  • 901795 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6578-1)
  • 902700 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (4639-1)
  • 906086 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (4639-2)
  • 940517 AlmaLinux Security Update for kernel (ALSA-2022:1988)

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