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CVE-2021-23133 Details

Description

A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:6.7 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b166a20b07382b8bc1dcee2a448715c9c2c81b5b	CVE	Mailing ListPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html	CVE	MitigationThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html	CVE	MitigationThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CUX2CA63453G34C6KYVBLJXJXEARZI2X/	CVE	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAEQ3H6HKNO6KUCGRZVYSFSAGEUX23JL/	CVE	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XZASHZVCOFJ4VU2I3BN5W5EPHWJQ7QWX/	CVE	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210611-0008/	CVE	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/04/18/2	CVE	ExploitMailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/1	CVE	Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/2	CVE	Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/3	CVE	Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/4	CVE	Mailing ListPatchThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b166a20b07382b8bc1dcee2a448715c9c2c81b5b	[email protected]	Mailing ListPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html	[email protected]	MitigationThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html	[email protected]	MitigationThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CUX2CA63453G34C6KYVBLJXJXEARZI2X/	[email protected]	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAEQ3H6HKNO6KUCGRZVYSFSAGEUX23JL/	[email protected]	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XZASHZVCOFJ4VU2I3BN5W5EPHWJQ7QWX/	[email protected]	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210611-0008/	[email protected]	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/04/18/2	[email protected]	ExploitMailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/1	[email protected]	Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/2	[email protected]	Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/3	[email protected]	Mailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/10/4	[email protected]	Mailing ListPatchThird Party Advisory

see all 24 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-362	Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')	[email protected]
CWE-362	Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')	[email protected]

Affected Products

Product	Versions
linux linux kernel	< 4.4.269 >= 4.5, < 4.9.269 >= 4.10, < 4.14.233 >= 4.15, < 4.19.191 >= 4.20, < 5.4.119
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.
fedoraproject fedora	32 33 34
CPE cpe:2.3:o:fedoraproject:fedora:32:::::::* cpe:2.3:o:fedoraproject:fedora:33:::::::* cpe:2.3:o:fedoraproject:fedora:34:::::::* Remediation No remediation found in references.
debian debian linux	9.0
CPE cpe:2.3:o:debian:debian_linux:9.0:::::::* Remediation No remediation found in references.
netapp cloud backup	All versions
CPE cpe:2.3:a:netapp:cloud_backup:-:::::::* Remediation No remediation found in references.
netapp solidfire & hci management node	All versions
CPE cpe:2.3:a:netapp:solidfire_&_hci_management_node:-:::::::* Remediation No remediation found in references.
broadcom brocade fabric operating system	All versions
CPE cpe:2.3:o:broadcom:brocade_fabric_operating_system:-:::::::* Remediation No remediation found in references.
netapp h410c firmware	All versions
CPE cpe:2.3:o:netapp:h410c_firmware:-:::::::* Remediation No remediation found in references.
netapp h410c	All versions
CPE cpe:2.3:h:netapp:h410c:-:::::::* Remediation No remediation found in references.
netapp h300s firmware	All versions
CPE cpe:2.3:o:netapp:h300s_firmware:-:::::::* Remediation No remediation found in references.
netapp h300s	All versions
CPE cpe:2.3:h:netapp:h300s:-:::::::* Remediation No remediation found in references.
netapp h500s firmware	All versions
CPE cpe:2.3:o:netapp:h500s_firmware:-:::::::* Remediation No remediation found in references.
netapp h500s	All versions
CPE cpe:2.3:h:netapp:h500s:-:::::::* Remediation No remediation found in references.
netapp h700s firmware	All versions
CPE cpe:2.3:o:netapp:h700s_firmware:-:::::::* Remediation No remediation found in references.
netapp h700s	All versions
CPE cpe:2.3:h:netapp:h700s:-:::::::* Remediation No remediation found in references.
netapp h300e firmware	All versions
CPE cpe:2.3:o:netapp:h300e_firmware:-:::::::* Remediation No remediation found in references.
netapp h300e	All versions
CPE cpe:2.3:h:netapp:h300e:-:::::::* Remediation No remediation found in references.
netapp h500e firmware	All versions
CPE cpe:2.3:o:netapp:h500e_firmware:-:::::::* Remediation No remediation found in references.
netapp h500e	All versions
CPE cpe:2.3:h:netapp:h500e:-:::::::* Remediation No remediation found in references.
netapp h700e firmware	All versions
CPE cpe:2.3:o:netapp:h700e_firmware:-:::::::* Remediation No remediation found in references.
netapp h700e	All versions
CPE cpe:2.3:h:netapp:h700e:-:::::::* Remediation No remediation found in references.
netapp h410s firmware	All versions
CPE cpe:2.3:o:netapp:h410s_firmware:-:::::::* Remediation No remediation found in references.
netapp h410s	All versions
CPE cpe:2.3:h:netapp:h410s:-:::::::* Remediation No remediation found in references.
netapp solidfire baseboard management controller firmware	All versions
CPE cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:::::::* Remediation No remediation found in references.
netapp solidfire baseboard management controller	All versions
CPE cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:::::::* Remediation No remediation found in references.

Change History

16 change records found show changes

Date	Action	Recorded By
Jul 30, 2026	Modified Analysis	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Jul 28, 2023	Reanalysis	[email protected]
Oct 7, 2022	Modified Analysis	[email protected]
Jun 23, 2021	CVE Modified	[email protected]
Jun 11, 2021	CVE Modified	[email protected]
May 10, 2021	CVE Modified	[email protected]
May 10, 2021	CVE Modified	[email protected]
May 10, 2021	CVE Modified	[email protected]
Apr 29, 2021	CVE Modified	[email protected]
Apr 27, 2021	Initial Analysis	[email protected]
Apr 27, 2021	CVE Modified	[email protected]
Apr 22, 2021	CVE Modified	[email protected]

CVE-2021-23133 Details

Description

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